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<div class="title">opennurbs_beam.h</div>  </div>
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<div class="contents">
<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno">    1</span>&#160;<span class="preprocessor">#if !defined(OPENNURBS_EXTRUSION_INC_)</span></div>
<div class="line"><a name="l00002"></a><span class="lineno">    2</span>&#160;<span class="preprocessor">#define OPENNURBS_EXTRUSION_INC_</span></div>
<div class="line"><a name="l00003"></a><span class="lineno">    3</span>&#160; </div>
<div class="line"><a name="l00004"></a><span class="lineno">    4</span>&#160;<span class="comment">/*</span></div>
<div class="line"><a name="l00005"></a><span class="lineno">    5</span>&#160;<span class="comment">Description:</span></div>
<div class="line"><a name="l00006"></a><span class="lineno">    6</span>&#160;<span class="comment">  Get the transformation that maps the ON_Extrusion </span></div>
<div class="line"><a name="l00007"></a><span class="lineno">    7</span>&#160;<span class="comment">  2d xy profile to 3d world space.</span></div>
<div class="line"><a name="l00008"></a><span class="lineno">    8</span>&#160;<span class="comment">Parameters:</span></div>
<div class="line"><a name="l00009"></a><span class="lineno">    9</span>&#160;<span class="comment">  P - [in] start or end of path</span></div>
<div class="line"><a name="l00010"></a><span class="lineno">   10</span>&#160;<span class="comment">  T - [in] unit tanget to path</span></div>
<div class="line"><a name="l00011"></a><span class="lineno">   11</span>&#160;<span class="comment">  U - [in] unit up vector perpendicular to T</span></div>
<div class="line"><a name="l00012"></a><span class="lineno">   12</span>&#160;<span class="comment">  Normal - [in] optional unit vector with Normal-&gt;z &gt; 0 that</span></div>
<div class="line"><a name="l00013"></a><span class="lineno">   13</span>&#160;<span class="comment">     defines the unit normal to the miter plane.</span></div>
<div class="line"><a name="l00014"></a><span class="lineno">   14</span>&#160;<span class="comment">  xform - [out]</span></div>
<div class="line"><a name="l00015"></a><span class="lineno">   15</span>&#160;<span class="comment">    transformation that maps the profile curve to 3d world space</span></div>
<div class="line"><a name="l00016"></a><span class="lineno">   16</span>&#160;<span class="comment">  scale2d - [out]</span></div>
<div class="line"><a name="l00017"></a><span class="lineno">   17</span>&#160;<span class="comment">    If not NULL, this is the scale part of the transformation.</span></div>
<div class="line"><a name="l00018"></a><span class="lineno">   18</span>&#160;<span class="comment">    If there is no mitering, then this is the identity.</span></div>
<div class="line"><a name="l00019"></a><span class="lineno">   19</span>&#160;<span class="comment">  rot2d - [out]</span></div>
<div class="line"><a name="l00020"></a><span class="lineno">   20</span>&#160;<span class="comment">    If not null, this is the part of the transformation</span></div>
<div class="line"><a name="l00021"></a><span class="lineno">   21</span>&#160;<span class="comment">    that rotates the xy plane into its 3d world location.</span></div>
<div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160;<span class="comment">Returns:</span></div>
<div class="line"><a name="l00023"></a><span class="lineno">   23</span>&#160;<span class="comment">  true if successful.</span></div>
<div class="line"><a name="l00024"></a><span class="lineno">   24</span>&#160;<span class="comment">*/</span></div>
<div class="line"><a name="l00025"></a><span class="lineno">   25</span>&#160;ON_DECL</div>
<div class="line"><a name="l00026"></a><span class="lineno">   26</span>&#160;<span class="keywordtype">bool</span> ON_GetEndCapTransformation(</div>
<div class="line"><a name="l00027"></a><span class="lineno">   27</span>&#160;          <a class="code" href="class_o_n__3d_point.html">ON_3dPoint</a> P, </div>
<div class="line"><a name="l00028"></a><span class="lineno">   28</span>&#160;          <a class="code" href="class_o_n__3d_vector.html">ON_3dVector</a> T, </div>
<div class="line"><a name="l00029"></a><span class="lineno">   29</span>&#160;          <a class="code" href="class_o_n__3d_vector.html">ON_3dVector</a> U, </div>
<div class="line"><a name="l00030"></a><span class="lineno">   30</span>&#160;          <span class="keyword">const</span> <a class="code" href="class_o_n__3d_vector.html">ON_3dVector</a>* Normal,</div>
<div class="line"><a name="l00031"></a><span class="lineno">   31</span>&#160;          <a class="code" href="class_o_n___xform.html">ON_Xform</a>&amp; xform, <span class="comment">// = rot3d*scale2d</span></div>
<div class="line"><a name="l00032"></a><span class="lineno">   32</span>&#160;          <a class="code" href="class_o_n___xform.html">ON_Xform</a>* scale2d,</div>
<div class="line"><a name="l00033"></a><span class="lineno">   33</span>&#160;          <a class="code" href="class_o_n___xform.html">ON_Xform</a>* rot2d</div>
<div class="line"><a name="l00034"></a><span class="lineno">   34</span>&#160;          );</div>
<div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160; </div>
<div class="line"><a name="l00036"></a><span class="lineno"><a class="line" href="class_o_n___extrusion.html">   36</a></span>&#160;<span class="keyword">class </span>ON_CLASS <a class="code" href="class_o_n___extrusion.html">ON_Extrusion</a> : <span class="keyword">public</span> <a class="code" href="class_o_n___surface.html">ON_Surface</a></div>
<div class="line"><a name="l00037"></a><span class="lineno">   37</span>&#160;{</div>
<div class="line"><a name="l00038"></a><span class="lineno">   38</span>&#160;  ON_OBJECT_DECLARE(<a class="code" href="class_o_n___extrusion.html">ON_Extrusion</a>);</div>
<div class="line"><a name="l00039"></a><span class="lineno">   39</span>&#160;<span class="keyword">public</span>:</div>
<div class="line"><a name="l00040"></a><span class="lineno">   40</span>&#160;  <a class="code" href="class_o_n___extrusion.html">ON_Extrusion</a>();</div>
<div class="line"><a name="l00041"></a><span class="lineno">   41</span>&#160;  <a class="code" href="class_o_n___extrusion.html">ON_Extrusion</a>(<span class="keyword">const</span> <a class="code" href="class_o_n___extrusion.html">ON_Extrusion</a>&amp; src);</div>
<div class="line"><a name="l00042"></a><span class="lineno">   42</span>&#160;  ~<a class="code" href="class_o_n___extrusion.html">ON_Extrusion</a>();</div>
<div class="line"><a name="l00043"></a><span class="lineno">   43</span>&#160; </div>
<div class="line"><a name="l00044"></a><span class="lineno">   44</span>&#160;  <a class="code" href="class_o_n___extrusion.html">ON_Extrusion</a>&amp; operator=(<span class="keyword">const</span> <a class="code" href="class_o_n___extrusion.html">ON_Extrusion</a>&amp;);</div>
<div class="line"><a name="l00045"></a><span class="lineno">   45</span>&#160; </div>
<div class="line"><a name="l00047"></a><span class="lineno">   47</span>&#160;  <span class="comment">//</span></div>
<div class="line"><a name="l00048"></a><span class="lineno">   48</span>&#160;  <span class="comment">// overrides of virtual ON_Object functions</span></div>
<div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160;  <span class="comment">// </span></div>
<div class="line"><a name="l00050"></a><span class="lineno">   50</span>&#160;  ON_BOOL32 IsValid( <a class="code" href="class_o_n___text_log.html">ON_TextLog</a>* text_log = NULL ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00051"></a><span class="lineno">   51</span>&#160;  <span class="keywordtype">void</span> Dump( <a class="code" href="class_o_n___text_log.html">ON_TextLog</a>&amp; ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00052"></a><span class="lineno">   52</span>&#160;  <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> SizeOf() <span class="keyword">const</span>;</div>
<div class="line"><a name="l00053"></a><span class="lineno">   53</span>&#160;  ON__UINT32 DataCRC( ON__UINT32 current_remainder ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00054"></a><span class="lineno">   54</span>&#160;  ON_BOOL32 Write( <a class="code" href="class_o_n___binary_archive.html">ON_BinaryArchive</a>&amp; binary_archive) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00055"></a><span class="lineno">   55</span>&#160;  ON_BOOL32 Read( <a class="code" href="class_o_n___binary_archive.html">ON_BinaryArchive</a>&amp; binary_archive );</div>
<div class="line"><a name="l00056"></a><span class="lineno">   56</span>&#160;  ON::object_type ObjectType() <span class="keyword">const</span>;</div>
<div class="line"><a name="l00057"></a><span class="lineno">   57</span>&#160; </div>
<div class="line"><a name="l00059"></a><span class="lineno">   59</span>&#160;  <span class="comment">//</span></div>
<div class="line"><a name="l00060"></a><span class="lineno">   60</span>&#160;  <span class="comment">// overrides of virtual ON_Geometry functions</span></div>
<div class="line"><a name="l00061"></a><span class="lineno">   61</span>&#160;  <span class="comment">// </span></div>
<div class="line"><a name="l00062"></a><span class="lineno">   62</span>&#160;  <span class="keywordtype">int</span> Dimension() <span class="keyword">const</span>;</div>
<div class="line"><a name="l00063"></a><span class="lineno">   63</span>&#160;  ON_BOOL32 GetBBox(</div>
<div class="line"><a name="l00064"></a><span class="lineno">   64</span>&#160;        <span class="keywordtype">double</span>* boxmin,</div>
<div class="line"><a name="l00065"></a><span class="lineno">   65</span>&#160;        <span class="keywordtype">double</span>* boxmax,</div>
<div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160;        <span class="keywordtype">int</span> bGrowBox = <span class="keyword">false</span></div>
<div class="line"><a name="l00067"></a><span class="lineno">   67</span>&#160;        ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00068"></a><span class="lineno">   68</span>&#160;    <span class="keywordtype">bool</span> GetTightBoundingBox( </div>
<div class="line"><a name="l00069"></a><span class="lineno">   69</span>&#160;        <a class="code" href="class_o_n___bounding_box.html">ON_BoundingBox</a>&amp; tight_bbox, </div>
<div class="line"><a name="l00070"></a><span class="lineno">   70</span>&#160;        <span class="keywordtype">int</span> bGrowBox = <span class="keyword">false</span>,</div>
<div class="line"><a name="l00071"></a><span class="lineno">   71</span>&#160;        <span class="keyword">const</span> <a class="code" href="class_o_n___xform.html">ON_Xform</a>* xform = 0</div>
<div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160;        ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00073"></a><span class="lineno">   73</span>&#160;  ON_BOOL32 Transform( </div>
<div class="line"><a name="l00074"></a><span class="lineno">   74</span>&#160;        <span class="keyword">const</span> <a class="code" href="class_o_n___xform.html">ON_Xform</a>&amp; xform</div>
<div class="line"><a name="l00075"></a><span class="lineno">   75</span>&#160;        );</div>
<div class="line"><a name="l00076"></a><span class="lineno">   76</span>&#160; </div>
<div class="line"><a name="l00077"></a><span class="lineno">   77</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00078"></a><span class="lineno">   78</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l00079"></a><span class="lineno">   79</span>&#160;<span class="comment">    Build a brep form of the extrusion.  The outer profile is always </span></div>
<div class="line"><a name="l00080"></a><span class="lineno">   80</span>&#160;<span class="comment">    the first face in the brep.  If there are inner profiles, </span></div>
<div class="line"><a name="l00081"></a><span class="lineno">   81</span>&#160;<span class="comment">    additional brep faces are created for each profile.  If the</span></div>
<div class="line"><a name="l00082"></a><span class="lineno">   82</span>&#160;<span class="comment">    outer profile is closed, then end caps are added as the last</span></div>
<div class="line"><a name="l00083"></a><span class="lineno">   83</span>&#160;<span class="comment">    two faces in the brep.</span></div>
<div class="line"><a name="l00084"></a><span class="lineno">   84</span>&#160;<span class="comment">  Parameters:</span></div>
<div class="line"><a name="l00085"></a><span class="lineno">   85</span>&#160;<span class="comment">    brep - [in]</span></div>
<div class="line"><a name="l00086"></a><span class="lineno">   86</span>&#160;<span class="comment">      If the brep pointer is not null, then the brep form is constructed</span></div>
<div class="line"><a name="l00087"></a><span class="lineno">   87</span>&#160;<span class="comment">      in brep.  If the brep pointer is null, then an ON_Brep is allocated</span></div>
<div class="line"><a name="l00088"></a><span class="lineno">   88</span>&#160;<span class="comment">      on the heap.</span></div>
<div class="line"><a name="l00089"></a><span class="lineno">   89</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l00090"></a><span class="lineno">   90</span>&#160;<span class="comment">    If successful, a pointer to the brep form.  If unsuccessful, null.</span></div>
<div class="line"><a name="l00091"></a><span class="lineno">   91</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00092"></a><span class="lineno">   92</span>&#160;  <a class="code" href="class_o_n___brep.html">ON_Brep</a>* BrepForm(</div>
<div class="line"><a name="l00093"></a><span class="lineno">   93</span>&#160;        <a class="code" href="class_o_n___brep.html">ON_Brep</a>* brep = NULL </div>
<div class="line"><a name="l00094"></a><span class="lineno">   94</span>&#160;        ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00095"></a><span class="lineno">   95</span>&#160; </div>
<div class="line"><a name="l00096"></a><span class="lineno">   96</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00097"></a><span class="lineno">   97</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l00098"></a><span class="lineno">   98</span>&#160;<span class="comment">    Build a brep form of the extrusion.  The outer profile is always </span></div>
<div class="line"><a name="l00099"></a><span class="lineno">   99</span>&#160;<span class="comment">    the first face in the brep.  If there are inner profiles, </span></div>
<div class="line"><a name="l00100"></a><span class="lineno">  100</span>&#160;<span class="comment">    additional brep faces are created for each profile.  If the</span></div>
<div class="line"><a name="l00101"></a><span class="lineno">  101</span>&#160;<span class="comment">    outer profile is closed, then end caps are added as the last</span></div>
<div class="line"><a name="l00102"></a><span class="lineno">  102</span>&#160;<span class="comment">    two faces in the brep.</span></div>
<div class="line"><a name="l00103"></a><span class="lineno">  103</span>&#160;<span class="comment">  Parameters:</span></div>
<div class="line"><a name="l00104"></a><span class="lineno">  104</span>&#160;<span class="comment">    brep - [in]</span></div>
<div class="line"><a name="l00105"></a><span class="lineno">  105</span>&#160;<span class="comment">      If the brep pointer is not null, then the brep form is constructed</span></div>
<div class="line"><a name="l00106"></a><span class="lineno">  106</span>&#160;<span class="comment">      in brep.  If the brep pointer is null, then an ON_Brep is allocated</span></div>
<div class="line"><a name="l00107"></a><span class="lineno">  107</span>&#160;<span class="comment">      on the heap.</span></div>
<div class="line"><a name="l00108"></a><span class="lineno">  108</span>&#160;<span class="comment">    bSmoothFaces - [in]</span></div>
<div class="line"><a name="l00109"></a><span class="lineno">  109</span>&#160;<span class="comment">      If true and the profiles have kinks, then the faces corresponding</span></div>
<div class="line"><a name="l00110"></a><span class="lineno">  110</span>&#160;<span class="comment">      to those profiles are split so they will be G1.</span></div>
<div class="line"><a name="l00111"></a><span class="lineno">  111</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l00112"></a><span class="lineno">  112</span>&#160;<span class="comment">    If successful, a pointer to the brep form.  If unsuccessful, null.</span></div>
<div class="line"><a name="l00113"></a><span class="lineno">  113</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00114"></a><span class="lineno">  114</span>&#160;  <a class="code" href="class_o_n___brep.html">ON_Brep</a>* BrepForm(</div>
<div class="line"><a name="l00115"></a><span class="lineno">  115</span>&#160;    <a class="code" href="class_o_n___brep.html">ON_Brep</a>* brep,</div>
<div class="line"><a name="l00116"></a><span class="lineno">  116</span>&#160;    <span class="keywordtype">bool</span> bSmoothFaces </div>
<div class="line"><a name="l00117"></a><span class="lineno">  117</span>&#160;    ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00118"></a><span class="lineno">  118</span>&#160; </div>
<div class="line"><a name="l00119"></a><span class="lineno">  119</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00120"></a><span class="lineno">  120</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l00121"></a><span class="lineno">  121</span>&#160;<span class="comment">    Build a sum surface form of the extrusion.</span></div>
<div class="line"><a name="l00122"></a><span class="lineno">  122</span>&#160;<span class="comment">  Parameters:</span></div>
<div class="line"><a name="l00123"></a><span class="lineno">  123</span>&#160;<span class="comment">    sum_surface - [in]</span></div>
<div class="line"><a name="l00124"></a><span class="lineno">  124</span>&#160;<span class="comment">      If the sum_surface pointer is not null, then the sum surface </span></div>
<div class="line"><a name="l00125"></a><span class="lineno">  125</span>&#160;<span class="comment">      form is constructed in sum_surface.  If the sum_surface pointer </span></div>
<div class="line"><a name="l00126"></a><span class="lineno">  126</span>&#160;<span class="comment">      is null, then an ON_SumSurface is allocated on the heap.</span></div>
<div class="line"><a name="l00127"></a><span class="lineno">  127</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l00128"></a><span class="lineno">  128</span>&#160;<span class="comment">    If successful, a pointer to the sum surface form.</span></div>
<div class="line"><a name="l00129"></a><span class="lineno">  129</span>&#160;<span class="comment">    If unsuccessful, null. In particular, extrusions with</span></div>
<div class="line"><a name="l00130"></a><span class="lineno">  130</span>&#160;<span class="comment">    mitered ends do not have sum surface forms.</span></div>
<div class="line"><a name="l00131"></a><span class="lineno">  131</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00132"></a><span class="lineno">  132</span>&#160;  <a class="code" href="class_o_n___sum_surface.html">ON_SumSurface</a>* SumSurfaceForm( </div>
<div class="line"><a name="l00133"></a><span class="lineno">  133</span>&#160;    <a class="code" href="class_o_n___sum_surface.html">ON_SumSurface</a>* sum_surface </div>
<div class="line"><a name="l00134"></a><span class="lineno">  134</span>&#160;    ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00135"></a><span class="lineno">  135</span>&#160; </div>
<div class="line"><a name="l00136"></a><span class="lineno">  136</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00137"></a><span class="lineno">  137</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l00138"></a><span class="lineno">  138</span>&#160;<span class="comment">    Convert a component index that identifies a part of this extrusion</span></div>
<div class="line"><a name="l00139"></a><span class="lineno">  139</span>&#160;<span class="comment">    to a component index that identifies a part of the brep created</span></div>
<div class="line"><a name="l00140"></a><span class="lineno">  140</span>&#160;<span class="comment">    by BrepForm(...,false).</span></div>
<div class="line"><a name="l00141"></a><span class="lineno">  141</span>&#160;<span class="comment">  Parameters:</span></div>
<div class="line"><a name="l00142"></a><span class="lineno">  142</span>&#160;<span class="comment">    extrusion_ci - [in]</span></div>
<div class="line"><a name="l00143"></a><span class="lineno">  143</span>&#160;<span class="comment">    extrusion_profile_parameter - [in]</span></div>
<div class="line"><a name="l00144"></a><span class="lineno">  144</span>&#160;<span class="comment">    brep_form - [in]</span></div>
<div class="line"><a name="l00145"></a><span class="lineno">  145</span>&#160;<span class="comment">      brep created by ON_Extrusion::BrepForm()</span></div>
<div class="line"><a name="l00146"></a><span class="lineno">  146</span>&#160;<span class="comment">    brep_ci - [out]</span></div>
<div class="line"><a name="l00147"></a><span class="lineno">  147</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l00148"></a><span class="lineno">  148</span>&#160;<span class="comment">    True if successful.  False if input is not valid, in which case brep_ci</span></div>
<div class="line"><a name="l00149"></a><span class="lineno">  149</span>&#160;<span class="comment">    is set by calling ON_COMPONENT_INDEX::UnSet().</span></div>
<div class="line"><a name="l00150"></a><span class="lineno">  150</span>&#160;<span class="comment">  Remarks:</span></div>
<div class="line"><a name="l00151"></a><span class="lineno">  151</span>&#160;<span class="comment">    If the wall surfaces have creases, then this function cannot</span></div>
<div class="line"><a name="l00152"></a><span class="lineno">  152</span>&#160;<span class="comment">    be used to identify brep components created by BrepForm(...,true).</span></div>
<div class="line"><a name="l00153"></a><span class="lineno">  153</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00154"></a><span class="lineno">  154</span>&#160;  <span class="keywordtype">bool</span> GetBrepFormComponentIndex(</div>
<div class="line"><a name="l00155"></a><span class="lineno">  155</span>&#160;    ON_COMPONENT_INDEX extrusion_ci,</div>
<div class="line"><a name="l00156"></a><span class="lineno">  156</span>&#160;    ON_COMPONENT_INDEX&amp; brep_ci</div>
<div class="line"><a name="l00157"></a><span class="lineno">  157</span>&#160;    ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00158"></a><span class="lineno">  158</span>&#160; </div>
<div class="line"><a name="l00159"></a><span class="lineno">  159</span>&#160;  <span class="keywordtype">bool</span> GetBrepFormComponentIndex(</div>
<div class="line"><a name="l00160"></a><span class="lineno">  160</span>&#160;    ON_COMPONENT_INDEX extrusion_ci,</div>
<div class="line"><a name="l00161"></a><span class="lineno">  161</span>&#160;    <span class="keywordtype">double</span> extrusion_profile_parameter,</div>
<div class="line"><a name="l00162"></a><span class="lineno">  162</span>&#160;    <span class="keyword">const</span> <a class="code" href="class_o_n___brep.html">ON_Brep</a>&amp; brep_form,</div>
<div class="line"><a name="l00163"></a><span class="lineno">  163</span>&#160;    ON_COMPONENT_INDEX&amp; brep_ci</div>
<div class="line"><a name="l00164"></a><span class="lineno">  164</span>&#160;    ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00165"></a><span class="lineno">  165</span>&#160; </div>
<div class="line"><a name="l00167"></a><span class="lineno">  167</span>&#160;  <span class="comment">//</span></div>
<div class="line"><a name="l00168"></a><span class="lineno">  168</span>&#160;  <span class="comment">// overrides of virtual ON_Surface functions</span></div>
<div class="line"><a name="l00169"></a><span class="lineno">  169</span>&#160;  <span class="comment">// </span></div>
<div class="line"><a name="l00170"></a><span class="lineno">  170</span>&#160;  ON_BOOL32 SetDomain( </div>
<div class="line"><a name="l00171"></a><span class="lineno">  171</span>&#160;        <span class="keywordtype">int</span> dir,</div>
<div class="line"><a name="l00172"></a><span class="lineno">  172</span>&#160;        <span class="keywordtype">double</span> t0, </div>
<div class="line"><a name="l00173"></a><span class="lineno">  173</span>&#160;        <span class="keywordtype">double</span> t1</div>
<div class="line"><a name="l00174"></a><span class="lineno">  174</span>&#160;        );</div>
<div class="line"><a name="l00175"></a><span class="lineno">  175</span>&#160;  <a class="code" href="class_o_n___interval.html">ON_Interval</a> Domain(</div>
<div class="line"><a name="l00176"></a><span class="lineno">  176</span>&#160;        <span class="keywordtype">int</span> dir</div>
<div class="line"><a name="l00177"></a><span class="lineno">  177</span>&#160;        ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00178"></a><span class="lineno">  178</span>&#160;  ON_BOOL32 GetSurfaceSize( </div>
<div class="line"><a name="l00179"></a><span class="lineno">  179</span>&#160;        <span class="keywordtype">double</span>* width, </div>
<div class="line"><a name="l00180"></a><span class="lineno">  180</span>&#160;        <span class="keywordtype">double</span>* height </div>
<div class="line"><a name="l00181"></a><span class="lineno">  181</span>&#160;        ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00182"></a><span class="lineno">  182</span>&#160;  <span class="keywordtype">int</span> SpanCount(</div>
<div class="line"><a name="l00183"></a><span class="lineno">  183</span>&#160;        <span class="keywordtype">int</span> dir</div>
<div class="line"><a name="l00184"></a><span class="lineno">  184</span>&#160;        ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00185"></a><span class="lineno">  185</span>&#160;  ON_BOOL32 GetSpanVector(</div>
<div class="line"><a name="l00186"></a><span class="lineno">  186</span>&#160;        <span class="keywordtype">int</span> dir,</div>
<div class="line"><a name="l00187"></a><span class="lineno">  187</span>&#160;        <span class="keywordtype">double</span>* span_vector</div>
<div class="line"><a name="l00188"></a><span class="lineno">  188</span>&#160;        ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00189"></a><span class="lineno">  189</span>&#160;  ON_BOOL32 GetSpanVectorIndex(</div>
<div class="line"><a name="l00190"></a><span class="lineno">  190</span>&#160;        <span class="keywordtype">int</span> dir,</div>
<div class="line"><a name="l00191"></a><span class="lineno">  191</span>&#160;        <span class="keywordtype">double</span> t,</div>
<div class="line"><a name="l00192"></a><span class="lineno">  192</span>&#160;        <span class="keywordtype">int</span> side,</div>
<div class="line"><a name="l00193"></a><span class="lineno">  193</span>&#160;        <span class="keywordtype">int</span>* span_vector_index,</div>
<div class="line"><a name="l00194"></a><span class="lineno">  194</span>&#160;        <a class="code" href="class_o_n___interval.html">ON_Interval</a>* span_interval</div>
<div class="line"><a name="l00195"></a><span class="lineno">  195</span>&#160;        ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00196"></a><span class="lineno">  196</span>&#160;  <span class="keywordtype">int</span> Degree(</div>
<div class="line"><a name="l00197"></a><span class="lineno">  197</span>&#160;        <span class="keywordtype">int</span> dir</div>
<div class="line"><a name="l00198"></a><span class="lineno">  198</span>&#160;        ) <span class="keyword">const</span>; </div>
<div class="line"><a name="l00199"></a><span class="lineno">  199</span>&#160;  ON_BOOL32 GetParameterTolerance(</div>
<div class="line"><a name="l00200"></a><span class="lineno">  200</span>&#160;         <span class="keywordtype">int</span> dir,</div>
<div class="line"><a name="l00201"></a><span class="lineno">  201</span>&#160;         <span class="keywordtype">double</span> t,</div>
<div class="line"><a name="l00202"></a><span class="lineno">  202</span>&#160;         <span class="keywordtype">double</span>* tminus,</div>
<div class="line"><a name="l00203"></a><span class="lineno">  203</span>&#160;         <span class="keywordtype">double</span>* tplus</div>
<div class="line"><a name="l00204"></a><span class="lineno">  204</span>&#160;         ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00205"></a><span class="lineno">  205</span>&#160;  ISO IsIsoparametric(</div>
<div class="line"><a name="l00206"></a><span class="lineno">  206</span>&#160;        <span class="keyword">const</span> <a class="code" href="class_o_n___curve.html">ON_Curve</a>&amp; curve,</div>
<div class="line"><a name="l00207"></a><span class="lineno">  207</span>&#160;        <span class="keyword">const</span> <a class="code" href="class_o_n___interval.html">ON_Interval</a>* curve_domain = NULL</div>
<div class="line"><a name="l00208"></a><span class="lineno">  208</span>&#160;        ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00209"></a><span class="lineno">  209</span>&#160;  ON_BOOL32 IsPlanar(</div>
<div class="line"><a name="l00210"></a><span class="lineno">  210</span>&#160;        <a class="code" href="class_o_n___plane.html">ON_Plane</a>* plane = NULL,</div>
<div class="line"><a name="l00211"></a><span class="lineno">  211</span>&#160;        <span class="keywordtype">double</span> tolerance = ON_ZERO_TOLERANCE</div>
<div class="line"><a name="l00212"></a><span class="lineno">  212</span>&#160;        ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00213"></a><span class="lineno">  213</span>&#160;  ON_BOOL32 IsClosed(</div>
<div class="line"><a name="l00214"></a><span class="lineno">  214</span>&#160;        <span class="keywordtype">int</span></div>
<div class="line"><a name="l00215"></a><span class="lineno">  215</span>&#160;        ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00216"></a><span class="lineno">  216</span>&#160;  ON_BOOL32 IsPeriodic(</div>
<div class="line"><a name="l00217"></a><span class="lineno">  217</span>&#160;        <span class="keywordtype">int</span></div>
<div class="line"><a name="l00218"></a><span class="lineno">  218</span>&#160;        ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00219"></a><span class="lineno">  219</span>&#160;  <span class="keywordtype">bool</span> GetNextDiscontinuity( </div>
<div class="line"><a name="l00220"></a><span class="lineno">  220</span>&#160;                  <span class="keywordtype">int</span> dir,</div>
<div class="line"><a name="l00221"></a><span class="lineno">  221</span>&#160;                  ON::continuity c,</div>
<div class="line"><a name="l00222"></a><span class="lineno">  222</span>&#160;                  <span class="keywordtype">double</span> t0,</div>
<div class="line"><a name="l00223"></a><span class="lineno">  223</span>&#160;                  <span class="keywordtype">double</span> t1,</div>
<div class="line"><a name="l00224"></a><span class="lineno">  224</span>&#160;                  <span class="keywordtype">double</span>* t,</div>
<div class="line"><a name="l00225"></a><span class="lineno">  225</span>&#160;                  <span class="keywordtype">int</span>* hint=NULL,</div>
<div class="line"><a name="l00226"></a><span class="lineno">  226</span>&#160;                  <span class="keywordtype">int</span>* dtype=NULL,</div>
<div class="line"><a name="l00227"></a><span class="lineno">  227</span>&#160;                  <span class="keywordtype">double</span> cos_angle_tolerance=ON_DEFAULT_ANGLE_TOLERANCE_COSINE,</div>
<div class="line"><a name="l00228"></a><span class="lineno">  228</span>&#160;                  <span class="keywordtype">double</span> curvature_tolerance=ON_SQRT_EPSILON</div>
<div class="line"><a name="l00229"></a><span class="lineno">  229</span>&#160;                  ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00230"></a><span class="lineno">  230</span>&#160;  <span class="keywordtype">bool</span> IsContinuous(</div>
<div class="line"><a name="l00231"></a><span class="lineno">  231</span>&#160;    ON::continuity c,</div>
<div class="line"><a name="l00232"></a><span class="lineno">  232</span>&#160;    <span class="keywordtype">double</span> s, </div>
<div class="line"><a name="l00233"></a><span class="lineno">  233</span>&#160;    <span class="keywordtype">double</span> t, </div>
<div class="line"><a name="l00234"></a><span class="lineno">  234</span>&#160;    <span class="keywordtype">int</span>* hint = NULL,</div>
<div class="line"><a name="l00235"></a><span class="lineno">  235</span>&#160;    <span class="keywordtype">double</span> point_tolerance=ON_ZERO_TOLERANCE,</div>
<div class="line"><a name="l00236"></a><span class="lineno">  236</span>&#160;    <span class="keywordtype">double</span> d1_tolerance=ON_ZERO_TOLERANCE,</div>
<div class="line"><a name="l00237"></a><span class="lineno">  237</span>&#160;    <span class="keywordtype">double</span> d2_tolerance=ON_ZERO_TOLERANCE,</div>
<div class="line"><a name="l00238"></a><span class="lineno">  238</span>&#160;    <span class="keywordtype">double</span> cos_angle_tolerance=ON_DEFAULT_ANGLE_TOLERANCE_COSINE,</div>
<div class="line"><a name="l00239"></a><span class="lineno">  239</span>&#160;    <span class="keywordtype">double</span> curvature_tolerance=ON_SQRT_EPSILON</div>
<div class="line"><a name="l00240"></a><span class="lineno">  240</span>&#160;    ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00241"></a><span class="lineno">  241</span>&#160;  ISO IsIsoparametric(</div>
<div class="line"><a name="l00242"></a><span class="lineno">  242</span>&#160;        <span class="keyword">const</span> <a class="code" href="class_o_n___bounding_box.html">ON_BoundingBox</a>&amp; bbox</div>
<div class="line"><a name="l00243"></a><span class="lineno">  243</span>&#160;        ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00244"></a><span class="lineno">  244</span>&#160;  ON_BOOL32 Reverse( <span class="keywordtype">int</span> dir );</div>
<div class="line"><a name="l00245"></a><span class="lineno">  245</span>&#160;  ON_BOOL32 Transpose();</div>
<div class="line"><a name="l00246"></a><span class="lineno">  246</span>&#160;  ON_BOOL32 Evaluate(</div>
<div class="line"><a name="l00247"></a><span class="lineno">  247</span>&#160;         <span class="keywordtype">double</span> u, <span class="keywordtype">double</span> v,</div>
<div class="line"><a name="l00248"></a><span class="lineno">  248</span>&#160;         <span class="keywordtype">int</span> num_der,</div>
<div class="line"><a name="l00249"></a><span class="lineno">  249</span>&#160;         <span class="keywordtype">int</span> array_stride,</div>
<div class="line"><a name="l00250"></a><span class="lineno">  250</span>&#160;         <span class="keywordtype">double</span>* der_array,</div>
<div class="line"><a name="l00251"></a><span class="lineno">  251</span>&#160;         <span class="keywordtype">int</span> quadrant = 0,</div>
<div class="line"><a name="l00252"></a><span class="lineno">  252</span>&#160;         <span class="keywordtype">int</span>* hint = 0</div>
<div class="line"><a name="l00253"></a><span class="lineno">  253</span>&#160;         ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00254"></a><span class="lineno">  254</span>&#160;  <a class="code" href="class_o_n___curve.html">ON_Curve</a>* IsoCurve(</div>
<div class="line"><a name="l00255"></a><span class="lineno">  255</span>&#160;         <span class="keywordtype">int</span> dir,</div>
<div class="line"><a name="l00256"></a><span class="lineno">  256</span>&#160;         <span class="keywordtype">double</span> c</div>
<div class="line"><a name="l00257"></a><span class="lineno">  257</span>&#160;         ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00258"></a><span class="lineno">  258</span>&#160; </div>
<div class="line"><a name="l00259"></a><span class="lineno">  259</span>&#160;  ON_BOOL32 Trim(</div>
<div class="line"><a name="l00260"></a><span class="lineno">  260</span>&#160;         <span class="keywordtype">int</span> dir,</div>
<div class="line"><a name="l00261"></a><span class="lineno">  261</span>&#160;         <span class="keyword">const</span> <a class="code" href="class_o_n___interval.html">ON_Interval</a>&amp; domain</div>
<div class="line"><a name="l00262"></a><span class="lineno">  262</span>&#160;         );</div>
<div class="line"><a name="l00263"></a><span class="lineno">  263</span>&#160;  <span class="keywordtype">bool</span> Extend(</div>
<div class="line"><a name="l00264"></a><span class="lineno">  264</span>&#160;    <span class="keywordtype">int</span> dir,</div>
<div class="line"><a name="l00265"></a><span class="lineno">  265</span>&#160;    <span class="keyword">const</span> <a class="code" href="class_o_n___interval.html">ON_Interval</a>&amp; domain</div>
<div class="line"><a name="l00266"></a><span class="lineno">  266</span>&#160;    );</div>
<div class="line"><a name="l00267"></a><span class="lineno">  267</span>&#160;  ON_BOOL32 Split(</div>
<div class="line"><a name="l00268"></a><span class="lineno">  268</span>&#160;         <span class="keywordtype">int</span> dir,</div>
<div class="line"><a name="l00269"></a><span class="lineno">  269</span>&#160;         <span class="keywordtype">double</span> c,</div>
<div class="line"><a name="l00270"></a><span class="lineno">  270</span>&#160;         <a class="code" href="class_o_n___surface.html">ON_Surface</a>*&amp; west_or_south_side,</div>
<div class="line"><a name="l00271"></a><span class="lineno">  271</span>&#160;         <a class="code" href="class_o_n___surface.html">ON_Surface</a>*&amp; east_or_north_side</div>
<div class="line"><a name="l00272"></a><span class="lineno">  272</span>&#160;         ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00273"></a><span class="lineno">  273</span>&#160; </div>
<div class="line"><a name="l00274"></a><span class="lineno">  274</span>&#160;  <span class="keywordtype">bool</span> GetClosestPoint( </div>
<div class="line"><a name="l00275"></a><span class="lineno">  275</span>&#160;          <span class="keyword">const</span> <a class="code" href="class_o_n__3d_point.html">ON_3dPoint</a>&amp; P,</div>
<div class="line"><a name="l00276"></a><span class="lineno">  276</span>&#160;          <span class="keywordtype">double</span>* s,</div>
<div class="line"><a name="l00277"></a><span class="lineno">  277</span>&#160;          <span class="keywordtype">double</span>* t,</div>
<div class="line"><a name="l00278"></a><span class="lineno">  278</span>&#160;          <span class="keywordtype">double</span> maximum_distance = 0.0,</div>
<div class="line"><a name="l00279"></a><span class="lineno">  279</span>&#160;          <span class="keyword">const</span> <a class="code" href="class_o_n___interval.html">ON_Interval</a>* sdomain = 0,</div>
<div class="line"><a name="l00280"></a><span class="lineno">  280</span>&#160;          <span class="keyword">const</span> <a class="code" href="class_o_n___interval.html">ON_Interval</a>* tdomain = 0</div>
<div class="line"><a name="l00281"></a><span class="lineno">  281</span>&#160;          ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00282"></a><span class="lineno">  282</span>&#160; </div>
<div class="line"><a name="l00283"></a><span class="lineno">  283</span>&#160;  ON_BOOL32 GetLocalClosestPoint( <span class="keyword">const</span> <a class="code" href="class_o_n__3d_point.html">ON_3dPoint</a>&amp;, <span class="comment">// test_point</span></div>
<div class="line"><a name="l00284"></a><span class="lineno">  284</span>&#160;          <span class="keywordtype">double</span>,<span class="keywordtype">double</span>,     <span class="comment">// seed_parameters</span></div>
<div class="line"><a name="l00285"></a><span class="lineno">  285</span>&#160;          <span class="keywordtype">double</span>*,<span class="keywordtype">double</span>*,   <span class="comment">// parameters of local closest point returned here</span></div>
<div class="line"><a name="l00286"></a><span class="lineno">  286</span>&#160;          <span class="keyword">const</span> <a class="code" href="class_o_n___interval.html">ON_Interval</a>* = NULL, <span class="comment">// first parameter sub_domain</span></div>
<div class="line"><a name="l00287"></a><span class="lineno">  287</span>&#160;          <span class="keyword">const</span> <a class="code" href="class_o_n___interval.html">ON_Interval</a>* = NULL  <span class="comment">// second parameter sub_domain</span></div>
<div class="line"><a name="l00288"></a><span class="lineno">  288</span>&#160;          ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00289"></a><span class="lineno">  289</span>&#160; </div>
<div class="line"><a name="l00290"></a><span class="lineno">  290</span>&#160;  <span class="comment">//ON_Surface* Offset(</span></div>
<div class="line"><a name="l00291"></a><span class="lineno">  291</span>&#160;  <span class="comment">//      double offset_distance, </span></div>
<div class="line"><a name="l00292"></a><span class="lineno">  292</span>&#160;  <span class="comment">//      double tolerance, </span></div>
<div class="line"><a name="l00293"></a><span class="lineno">  293</span>&#160;  <span class="comment">//      double* max_deviation = NULL</span></div>
<div class="line"><a name="l00294"></a><span class="lineno">  294</span>&#160;  <span class="comment">//      ) const;</span></div>
<div class="line"><a name="l00295"></a><span class="lineno">  295</span>&#160; </div>
<div class="line"><a name="l00296"></a><span class="lineno">  296</span>&#160;  <span class="keywordtype">int</span> GetNurbForm(</div>
<div class="line"><a name="l00297"></a><span class="lineno">  297</span>&#160;        <a class="code" href="class_o_n___nurbs_surface.html">ON_NurbsSurface</a>&amp; nurbs_surface,</div>
<div class="line"><a name="l00298"></a><span class="lineno">  298</span>&#160;        <span class="keywordtype">double</span> tolerance = 0.0</div>
<div class="line"><a name="l00299"></a><span class="lineno">  299</span>&#160;        ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00300"></a><span class="lineno">  300</span>&#160;  <span class="keywordtype">int</span> HasNurbForm() <span class="keyword">const</span>;</div>
<div class="line"><a name="l00301"></a><span class="lineno">  301</span>&#160;  <span class="keywordtype">bool</span> GetSurfaceParameterFromNurbFormParameter(</div>
<div class="line"><a name="l00302"></a><span class="lineno">  302</span>&#160;        <span class="keywordtype">double</span> nurbs_s, <span class="keywordtype">double</span> nurbs_t,</div>
<div class="line"><a name="l00303"></a><span class="lineno">  303</span>&#160;        <span class="keywordtype">double</span>* surface_s, <span class="keywordtype">double</span>* surface_t</div>
<div class="line"><a name="l00304"></a><span class="lineno">  304</span>&#160;        ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00305"></a><span class="lineno">  305</span>&#160;  <span class="keywordtype">bool</span> GetNurbFormParameterFromSurfaceParameter(</div>
<div class="line"><a name="l00306"></a><span class="lineno">  306</span>&#160;        <span class="keywordtype">double</span> surface_s, <span class="keywordtype">double</span> surface_t,</div>
<div class="line"><a name="l00307"></a><span class="lineno">  307</span>&#160;        <span class="keywordtype">double</span>* nurbs_s,  <span class="keywordtype">double</span>* nurbs_t</div>
<div class="line"><a name="l00308"></a><span class="lineno">  308</span>&#160;        ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00309"></a><span class="lineno">  309</span>&#160; </div>
<div class="line"><a name="l00311"></a><span class="lineno">  311</span>&#160;  <span class="comment">//</span></div>
<div class="line"><a name="l00312"></a><span class="lineno">  312</span>&#160;  <span class="comment">// ON_Extrusion interface</span></div>
<div class="line"><a name="l00313"></a><span class="lineno">  313</span>&#160;  <span class="comment">// </span></div>
<div class="line"><a name="l00314"></a><span class="lineno">  314</span>&#160;  <span class="keywordtype">void</span> Destroy();</div>
<div class="line"><a name="l00315"></a><span class="lineno">  315</span>&#160; </div>
<div class="line"><a name="l00316"></a><span class="lineno">  316</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00317"></a><span class="lineno">  317</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l00318"></a><span class="lineno">  318</span>&#160;<span class="comment">    Sets m_path to (A,B), m_path_domain to [0,Length(AB)],</span></div>
<div class="line"><a name="l00319"></a><span class="lineno">  319</span>&#160;<span class="comment">    and m_t to [0,1].</span></div>
<div class="line"><a name="l00320"></a><span class="lineno">  320</span>&#160;<span class="comment">  Parameters:</span></div>
<div class="line"><a name="l00321"></a><span class="lineno">  321</span>&#160;<span class="comment">    A - [in] path start</span></div>
<div class="line"><a name="l00322"></a><span class="lineno">  322</span>&#160;<span class="comment">    B - [in] path end</span></div>
<div class="line"><a name="l00323"></a><span class="lineno">  323</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l00324"></a><span class="lineno">  324</span>&#160;<span class="comment">    true  A and B are valid, the distance from A to B is larger</span></div>
<div class="line"><a name="l00325"></a><span class="lineno">  325</span>&#160;<span class="comment">          than ON_ZERO_TOLERANCE, and the path was set.</span></div>
<div class="line"><a name="l00326"></a><span class="lineno">  326</span>&#160;<span class="comment">    false A or B is not valid or the distance from A to B is</span></div>
<div class="line"><a name="l00327"></a><span class="lineno">  327</span>&#160;<span class="comment">          at most ON_ZERO_TOLERANCE. In this case nothing is set.</span></div>
<div class="line"><a name="l00328"></a><span class="lineno">  328</span>&#160;<span class="comment">  Remark:</span></div>
<div class="line"><a name="l00329"></a><span class="lineno">  329</span>&#160;<span class="comment">    You must also set the up direction to be perpendicular to the path.</span></div>
<div class="line"><a name="l00330"></a><span class="lineno">  330</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00331"></a><span class="lineno">  331</span>&#160;  <span class="keywordtype">bool</span> SetPath(<a class="code" href="class_o_n__3d_point.html">ON_3dPoint</a> A, <a class="code" href="class_o_n__3d_point.html">ON_3dPoint</a> B);</div>
<div class="line"><a name="l00332"></a><span class="lineno">  332</span>&#160; </div>
<div class="line"><a name="l00333"></a><span class="lineno">  333</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00334"></a><span class="lineno">  334</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l00335"></a><span class="lineno">  335</span>&#160;<span class="comment">    Sets m_path to (A,B), m_path_domain to [0,Length(AB)],</span></div>
<div class="line"><a name="l00336"></a><span class="lineno">  336</span>&#160;<span class="comment">    m_t to [0,1], and m_up.</span></div>
<div class="line"><a name="l00337"></a><span class="lineno">  337</span>&#160;<span class="comment">  Parameters:</span></div>
<div class="line"><a name="l00338"></a><span class="lineno">  338</span>&#160;<span class="comment">    A - [in] path start</span></div>
<div class="line"><a name="l00339"></a><span class="lineno">  339</span>&#160;<span class="comment">    B - [in] path end</span></div>
<div class="line"><a name="l00340"></a><span class="lineno">  340</span>&#160;<span class="comment">    up - [in] up direction</span></div>
<div class="line"><a name="l00341"></a><span class="lineno">  341</span>&#160;<span class="comment">      If up is a unit vector and perpendicular to the line </span></div>
<div class="line"><a name="l00342"></a><span class="lineno">  342</span>&#160;<span class="comment">      segment from A to B, then m_up is set to up.</span></div>
<div class="line"><a name="l00343"></a><span class="lineno">  343</span>&#160;<span class="comment">      Otherwise up will be adjusted so it is perpendicular</span></div>
<div class="line"><a name="l00344"></a><span class="lineno">  344</span>&#160;<span class="comment">      to the line segment from A to B and unitized.</span></div>
<div class="line"><a name="l00345"></a><span class="lineno">  345</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l00346"></a><span class="lineno">  346</span>&#160;<span class="comment">    true  A and B are valid, the distance from A to B is larger</span></div>
<div class="line"><a name="l00347"></a><span class="lineno">  347</span>&#160;<span class="comment">          than ON_ZERO_TOLERANCE, and the path was set.</span></div>
<div class="line"><a name="l00348"></a><span class="lineno">  348</span>&#160;<span class="comment">    false A or B is not valid, or the distance from A to B is</span></div>
<div class="line"><a name="l00349"></a><span class="lineno">  349</span>&#160;<span class="comment">          at most ON_ZERO_TOLERANCE, or up is invalid, or up</span></div>
<div class="line"><a name="l00350"></a><span class="lineno">  350</span>&#160;<span class="comment">          is zero, or up is parallel to the line segment.</span></div>
<div class="line"><a name="l00351"></a><span class="lineno">  351</span>&#160;<span class="comment">          In this case nothing is set.</span></div>
<div class="line"><a name="l00352"></a><span class="lineno">  352</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00353"></a><span class="lineno">  353</span>&#160;  <span class="keywordtype">bool</span> SetPathAndUp(<a class="code" href="class_o_n__3d_point.html">ON_3dPoint</a> A, <a class="code" href="class_o_n__3d_point.html">ON_3dPoint</a> B, <a class="code" href="class_o_n__3d_vector.html">ON_3dVector</a> up );</div>
<div class="line"><a name="l00354"></a><span class="lineno">  354</span>&#160; </div>
<div class="line"><a name="l00355"></a><span class="lineno">  355</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00356"></a><span class="lineno">  356</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l00357"></a><span class="lineno">  357</span>&#160;<span class="comment">    Get the surface parameter for the path.</span></div>
<div class="line"><a name="l00358"></a><span class="lineno">  358</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l00359"></a><span class="lineno">  359</span>&#160;<span class="comment">    0: The first surface parameter corresponds to the path direction.</span></div>
<div class="line"><a name="l00360"></a><span class="lineno">  360</span>&#160;<span class="comment">       (m_bTransposed = true)</span></div>
<div class="line"><a name="l00361"></a><span class="lineno">  361</span>&#160;<span class="comment">    1: The second surface parameter corresponds to the path direction.</span></div>
<div class="line"><a name="l00362"></a><span class="lineno">  362</span>&#160;<span class="comment">       (m_bTransposed = false)</span></div>
<div class="line"><a name="l00363"></a><span class="lineno">  363</span>&#160;<span class="comment">  Remarks:</span></div>
<div class="line"><a name="l00364"></a><span class="lineno">  364</span>&#160;<span class="comment">    The default ON_Extrusion constructor sets </span></div>
<div class="line"><a name="l00365"></a><span class="lineno">  365</span>&#160;<span class="comment">    m_bTransposed = false which corresponds to the 1 = PathParameter().</span></div>
<div class="line"><a name="l00366"></a><span class="lineno">  366</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00367"></a><span class="lineno">  367</span>&#160;  <span class="keywordtype">int</span> PathParameter() <span class="keyword">const</span>;</div>
<div class="line"><a name="l00368"></a><span class="lineno">  368</span>&#160; </div>
<div class="line"><a name="l00369"></a><span class="lineno">  369</span>&#160;  <a class="code" href="class_o_n__3d_point.html">ON_3dPoint</a> PathStart() <span class="keyword">const</span>;</div>
<div class="line"><a name="l00370"></a><span class="lineno">  370</span>&#160;  <a class="code" href="class_o_n__3d_point.html">ON_3dPoint</a> PathEnd() <span class="keyword">const</span>;</div>
<div class="line"><a name="l00371"></a><span class="lineno">  371</span>&#160;  <a class="code" href="class_o_n__3d_vector.html">ON_3dVector</a> PathTangent() <span class="keyword">const</span>;</div>
<div class="line"><a name="l00372"></a><span class="lineno">  372</span>&#160; </div>
<div class="line"><a name="l00373"></a><span class="lineno">  373</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00374"></a><span class="lineno">  374</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l00375"></a><span class="lineno">  375</span>&#160;<span class="comment">    Set miter plane normal.</span></div>
<div class="line"><a name="l00376"></a><span class="lineno">  376</span>&#160;<span class="comment">  Parameters:</span></div>
<div class="line"><a name="l00377"></a><span class="lineno">  377</span>&#160;<span class="comment">    N - [in] If ON_UNSET_VECTOR or N is parallel to the z-axis,</span></div>
<div class="line"><a name="l00378"></a><span class="lineno">  378</span>&#160;<span class="comment">             then the miter plane is the default plane </span></div>
<div class="line"><a name="l00379"></a><span class="lineno">  379</span>&#160;<span class="comment">             perpendicular to the path.</span></div>
<div class="line"><a name="l00380"></a><span class="lineno">  380</span>&#160;<span class="comment">             If N is valid and the z coordinate of a unitized</span></div>
<div class="line"><a name="l00381"></a><span class="lineno">  381</span>&#160;<span class="comment">             N is greater than m_Nz_tol, then the miter plane </span></div>
<div class="line"><a name="l00382"></a><span class="lineno">  382</span>&#160;<span class="comment">             normal is set.</span></div>
<div class="line"><a name="l00383"></a><span class="lineno">  383</span>&#160;<span class="comment">    end - [in] 0 = set miter plane at the start of the path.</span></div>
<div class="line"><a name="l00384"></a><span class="lineno">  384</span>&#160;<span class="comment">               1 = set miter plane at the end of the path.</span></div>
<div class="line"><a name="l00385"></a><span class="lineno">  385</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00386"></a><span class="lineno">  386</span>&#160;  <span class="keywordtype">bool</span> SetMiterPlaneNormal(<a class="code" href="class_o_n__3d_vector.html">ON_3dVector</a> N, <span class="keywordtype">int</span> end);</div>
<div class="line"><a name="l00387"></a><span class="lineno">  387</span>&#160; </div>
<div class="line"><a name="l00388"></a><span class="lineno">  388</span>&#160;  <span class="keywordtype">void</span> GetMiterPlaneNormal(<span class="keywordtype">int</span> end, <a class="code" href="class_o_n__3d_vector.html">ON_3dVector</a>&amp; N) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00389"></a><span class="lineno">  389</span>&#160; </div>
<div class="line"><a name="l00390"></a><span class="lineno">  390</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00391"></a><span class="lineno">  391</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l00392"></a><span class="lineno">  392</span>&#160;<span class="comment">    0: not mitered.</span></div>
<div class="line"><a name="l00393"></a><span class="lineno">  393</span>&#160;<span class="comment">    1: start of path is mitered.</span></div>
<div class="line"><a name="l00394"></a><span class="lineno">  394</span>&#160;<span class="comment">    2: end of path is mitered.</span></div>
<div class="line"><a name="l00395"></a><span class="lineno">  395</span>&#160;<span class="comment">    3: start and end are mitered.</span></div>
<div class="line"><a name="l00396"></a><span class="lineno">  396</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00397"></a><span class="lineno">  397</span>&#160;  <span class="keywordtype">int</span> IsMitered() <span class="keyword">const</span>;</div>
<div class="line"><a name="l00398"></a><span class="lineno">  398</span>&#160; </div>
<div class="line"><a name="l00399"></a><span class="lineno">  399</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00400"></a><span class="lineno">  400</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l00401"></a><span class="lineno">  401</span>&#160;<span class="comment">    True if extrusion object is a capped solid.</span></div>
<div class="line"><a name="l00402"></a><span class="lineno">  402</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00403"></a><span class="lineno">  403</span>&#160;  <span class="keywordtype">bool</span> IsSolid() <span class="keyword">const</span>;</div>
<div class="line"><a name="l00404"></a><span class="lineno">  404</span>&#160; </div>
<div class="line"><a name="l00405"></a><span class="lineno">  405</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00406"></a><span class="lineno">  406</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l00407"></a><span class="lineno">  407</span>&#160;<span class="comment">    0: no or profile is open</span></div>
<div class="line"><a name="l00408"></a><span class="lineno">  408</span>&#160;<span class="comment">    1: bottom cap</span></div>
<div class="line"><a name="l00409"></a><span class="lineno">  409</span>&#160;<span class="comment">    2: top cap</span></div>
<div class="line"><a name="l00410"></a><span class="lineno">  410</span>&#160;<span class="comment">    3: both ends capped.</span></div>
<div class="line"><a name="l00411"></a><span class="lineno">  411</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00412"></a><span class="lineno">  412</span>&#160;  <span class="keywordtype">int</span> IsCapped() <span class="keyword">const</span>;</div>
<div class="line"><a name="l00413"></a><span class="lineno">  413</span>&#160; </div>
<div class="line"><a name="l00414"></a><span class="lineno">  414</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00415"></a><span class="lineno">  415</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l00416"></a><span class="lineno">  416</span>&#160;<span class="comment">    0: no caps</span></div>
<div class="line"><a name="l00417"></a><span class="lineno">  417</span>&#160;<span class="comment">    1: exrusion has either a top cap or a bottom cap</span></div>
<div class="line"><a name="l00418"></a><span class="lineno">  418</span>&#160;<span class="comment">    2: both ends are capped.</span></div>
<div class="line"><a name="l00419"></a><span class="lineno">  419</span>&#160;<span class="comment">  See Also:</span></div>
<div class="line"><a name="l00420"></a><span class="lineno">  420</span>&#160;<span class="comment">    ON_Extrusion::ProfileCount()</span></div>
<div class="line"><a name="l00421"></a><span class="lineno">  421</span>&#160;<span class="comment">    ON_Extrusion::ProfileSmoothSegmentCount()</span></div>
<div class="line"><a name="l00422"></a><span class="lineno">  422</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00423"></a><span class="lineno">  423</span>&#160;  <span class="keywordtype">int</span> CapCount() <span class="keyword">const</span>;</div>
<div class="line"><a name="l00424"></a><span class="lineno">  424</span>&#160; </div>
<div class="line"><a name="l00425"></a><span class="lineno">  425</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00426"></a><span class="lineno">  426</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l00427"></a><span class="lineno">  427</span>&#160;<span class="comment">    Deprecated function.</span></div>
<div class="line"><a name="l00428"></a><span class="lineno">  428</span>&#160;<span class="comment"></span> </div>
<div class="line"><a name="l00429"></a><span class="lineno">  429</span>&#160;<span class="comment">    Use CapCount() to determine how many end caps there are.</span></div>
<div class="line"><a name="l00430"></a><span class="lineno">  430</span>&#160;<span class="comment">    Use ProfileCount() to determine how many profiles there are.</span></div>
<div class="line"><a name="l00431"></a><span class="lineno">  431</span>&#160;<span class="comment">    Use ProfileSmoothSegmentCount() to determine how many </span></div>
<div class="line"><a name="l00432"></a><span class="lineno">  432</span>&#160;<span class="comment">    smooth subsegments are in a profile. Each smooth subsegment</span></div>
<div class="line"><a name="l00433"></a><span class="lineno">  433</span>&#160;<span class="comment">    becomes a wall face in the brep form.</span></div>
<div class="line"><a name="l00434"></a><span class="lineno">  434</span>&#160;<span class="comment"></span> </div>
<div class="line"><a name="l00435"></a><span class="lineno">  435</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l00436"></a><span class="lineno">  436</span>&#160;<span class="comment">    Number of &quot;faces&quot; the extrusion has.</span></div>
<div class="line"><a name="l00437"></a><span class="lineno">  437</span>&#160;<span class="comment">    0: extrusion is not valid</span></div>
<div class="line"><a name="l00438"></a><span class="lineno">  438</span>&#160;<span class="comment">    1: extrusion is not capped</span></div>
<div class="line"><a name="l00439"></a><span class="lineno">  439</span>&#160;<span class="comment">    2: extrusion has a closed outer profile and one cap</span></div>
<div class="line"><a name="l00440"></a><span class="lineno">  440</span>&#160;<span class="comment">    3: extrusion has a closed outer profile and two caps</span></div>
<div class="line"><a name="l00441"></a><span class="lineno">  441</span>&#160;<span class="comment"></span> </div>
<div class="line"><a name="l00442"></a><span class="lineno">  442</span>&#160;<span class="comment">  Remarks:</span></div>
<div class="line"><a name="l00443"></a><span class="lineno">  443</span>&#160;<span class="comment">    This function was written before extrusions supported &quot;holes&quot;</span></div>
<div class="line"><a name="l00444"></a><span class="lineno">  444</span>&#160;<span class="comment">    and before the brep form was divided at profile creases.</span></div>
<div class="line"><a name="l00445"></a><span class="lineno">  445</span>&#160;<span class="comment">    At this point it simply leads to confusion. See the Description</span></div>
<div class="line"><a name="l00446"></a><span class="lineno">  446</span>&#160;<span class="comment">    function replacements.</span></div>
<div class="line"><a name="l00447"></a><span class="lineno">  447</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00448"></a><span class="lineno">  448</span>&#160;  ON_DEPRECATED <span class="keywordtype">int</span> FaceCount() <span class="keyword">const</span>;</div>
<div class="line"><a name="l00449"></a><span class="lineno">  449</span>&#160; </div>
<div class="line"><a name="l00450"></a><span class="lineno">  450</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00451"></a><span class="lineno">  451</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l00452"></a><span class="lineno">  452</span>&#160;<span class="comment">    Get the transformation that maps the xy profile curve</span></div>
<div class="line"><a name="l00453"></a><span class="lineno">  453</span>&#160;<span class="comment">    to its 3d location.</span></div>
<div class="line"><a name="l00454"></a><span class="lineno">  454</span>&#160;<span class="comment">  Parameters:</span></div>
<div class="line"><a name="l00455"></a><span class="lineno">  455</span>&#160;<span class="comment">    s - [in] 0.0 = starting profile</span></div>
<div class="line"><a name="l00456"></a><span class="lineno">  456</span>&#160;<span class="comment">             1.0 = ending profile</span></div>
<div class="line"><a name="l00457"></a><span class="lineno">  457</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00458"></a><span class="lineno">  458</span>&#160;  <span class="keywordtype">bool</span> GetProfileTransformation( <span class="keywordtype">double</span> s, <a class="code" href="class_o_n___xform.html">ON_Xform</a>&amp; xform ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00459"></a><span class="lineno">  459</span>&#160; </div>
<div class="line"><a name="l00460"></a><span class="lineno">  460</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00461"></a><span class="lineno">  461</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l00462"></a><span class="lineno">  462</span>&#160;<span class="comment">    Get the the 3d plane containing the profile curve at a</span></div>
<div class="line"><a name="l00463"></a><span class="lineno">  463</span>&#160;<span class="comment">    normalized path parameter.</span></div>
<div class="line"><a name="l00464"></a><span class="lineno">  464</span>&#160;<span class="comment">  Parameters:</span></div>
<div class="line"><a name="l00465"></a><span class="lineno">  465</span>&#160;<span class="comment">    s - [in] 0.0 = starting plane</span></div>
<div class="line"><a name="l00466"></a><span class="lineno">  466</span>&#160;<span class="comment">             1.0 = ending plane</span></div>
<div class="line"><a name="l00467"></a><span class="lineno">  467</span>&#160;<span class="comment">    plane - [out]</span></div>
<div class="line"><a name="l00468"></a><span class="lineno">  468</span>&#160;<span class="comment">      Plane containing profile is returned in plane.  If</span></div>
<div class="line"><a name="l00469"></a><span class="lineno">  469</span>&#160;<span class="comment">      false is returned, then the input value of plane</span></div>
<div class="line"><a name="l00470"></a><span class="lineno">  470</span>&#160;<span class="comment">      is not changed.</span></div>
<div class="line"><a name="l00471"></a><span class="lineno">  471</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l00472"></a><span class="lineno">  472</span>&#160;<span class="comment">    true if plane was set.  False if this is invalid and plane</span></div>
<div class="line"><a name="l00473"></a><span class="lineno">  473</span>&#160;<span class="comment">    could not be set.</span></div>
<div class="line"><a name="l00474"></a><span class="lineno">  474</span>&#160;<span class="comment">  Remarks:</span></div>
<div class="line"><a name="l00475"></a><span class="lineno">  475</span>&#160;<span class="comment">    When no mitering is happening, GetPathPlane() and</span></div>
<div class="line"><a name="l00476"></a><span class="lineno">  476</span>&#160;<span class="comment">    GetProfilePlane() return the same plane.</span></div>
<div class="line"><a name="l00477"></a><span class="lineno">  477</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00478"></a><span class="lineno">  478</span>&#160;  <span class="keywordtype">bool</span> GetProfilePlane( <span class="keywordtype">double</span> s, <a class="code" href="class_o_n___plane.html">ON_Plane</a>&amp; plane ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00479"></a><span class="lineno">  479</span>&#160; </div>
<div class="line"><a name="l00480"></a><span class="lineno">  480</span>&#160; </div>
<div class="line"><a name="l00481"></a><span class="lineno">  481</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00482"></a><span class="lineno">  482</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l00483"></a><span class="lineno">  483</span>&#160;<span class="comment">    Get the the 3d plane perpendicular to the path at a</span></div>
<div class="line"><a name="l00484"></a><span class="lineno">  484</span>&#160;<span class="comment">    normalized path parameter.</span></div>
<div class="line"><a name="l00485"></a><span class="lineno">  485</span>&#160;<span class="comment">  Parameters:</span></div>
<div class="line"><a name="l00486"></a><span class="lineno">  486</span>&#160;<span class="comment">    s - [in] 0.0 = starting plane</span></div>
<div class="line"><a name="l00487"></a><span class="lineno">  487</span>&#160;<span class="comment">             1.0 = ending plane</span></div>
<div class="line"><a name="l00488"></a><span class="lineno">  488</span>&#160;<span class="comment">    plane - [out]</span></div>
<div class="line"><a name="l00489"></a><span class="lineno">  489</span>&#160;<span class="comment">      Plane is returned here.  If</span></div>
<div class="line"><a name="l00490"></a><span class="lineno">  490</span>&#160;<span class="comment">      false is returned, then the input value of plane</span></div>
<div class="line"><a name="l00491"></a><span class="lineno">  491</span>&#160;<span class="comment">      is not changed.</span></div>
<div class="line"><a name="l00492"></a><span class="lineno">  492</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l00493"></a><span class="lineno">  493</span>&#160;<span class="comment">    true if plane was set.  False if this is invalid and plane</span></div>
<div class="line"><a name="l00494"></a><span class="lineno">  494</span>&#160;<span class="comment">    could not be set.</span></div>
<div class="line"><a name="l00495"></a><span class="lineno">  495</span>&#160;<span class="comment">  Remarks:</span></div>
<div class="line"><a name="l00496"></a><span class="lineno">  496</span>&#160;<span class="comment">    When no mitering is happening, GetPathPlane() and</span></div>
<div class="line"><a name="l00497"></a><span class="lineno">  497</span>&#160;<span class="comment">    GetProfilePlane() return the same plane.</span></div>
<div class="line"><a name="l00498"></a><span class="lineno">  498</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00499"></a><span class="lineno">  499</span>&#160;  <span class="keywordtype">bool</span> GetPathPlane( <span class="keywordtype">double</span> s, <a class="code" href="class_o_n___plane.html">ON_Plane</a>&amp; plane ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00500"></a><span class="lineno">  500</span>&#160; </div>
<div class="line"><a name="l00501"></a><span class="lineno">  501</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00502"></a><span class="lineno">  502</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l00503"></a><span class="lineno">  503</span>&#160;<span class="comment">    Set the outer profile of the extrusion.</span></div>
<div class="line"><a name="l00504"></a><span class="lineno">  504</span>&#160;<span class="comment">  Paramters:</span></div>
<div class="line"><a name="l00505"></a><span class="lineno">  505</span>&#160;<span class="comment">    outer_profile - [in] </span></div>
<div class="line"><a name="l00506"></a><span class="lineno">  506</span>&#160;<span class="comment">      curve in the xy plane or a 2d curve.</span></div>
<div class="line"><a name="l00507"></a><span class="lineno">  507</span>&#160;<span class="comment">    bCap - [in]</span></div>
<div class="line"><a name="l00508"></a><span class="lineno">  508</span>&#160;<span class="comment">      If outer_profile is a closed curve, then bCap</span></div>
<div class="line"><a name="l00509"></a><span class="lineno">  509</span>&#160;<span class="comment">      determines if the extrusion has end caps.</span></div>
<div class="line"><a name="l00510"></a><span class="lineno">  510</span>&#160;<span class="comment">      If outer_profile is an open curve, bCap is ignored.</span></div>
<div class="line"><a name="l00511"></a><span class="lineno">  511</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l00512"></a><span class="lineno">  512</span>&#160;<span class="comment">    True if the profile was set. In this case the ON_Extrusion class</span></div>
<div class="line"><a name="l00513"></a><span class="lineno">  513</span>&#160;<span class="comment">    manages the curve and ~ON_Extrusion will delete it.  If the outer</span></div>
<div class="line"><a name="l00514"></a><span class="lineno">  514</span>&#160;<span class="comment">    profile is closed, then the extrusion may also have inner profiles.</span></div>
<div class="line"><a name="l00515"></a><span class="lineno">  515</span>&#160;<span class="comment">    If the outer profile is open, the extrusion may not have inner</span></div>
<div class="line"><a name="l00516"></a><span class="lineno">  516</span>&#160;<span class="comment">    profiles. If the extrusion already has a profile, the set will</span></div>
<div class="line"><a name="l00517"></a><span class="lineno">  517</span>&#160;<span class="comment">    fail.</span></div>
<div class="line"><a name="l00518"></a><span class="lineno">  518</span>&#160;<span class="comment">  Remarks:</span></div>
<div class="line"><a name="l00519"></a><span class="lineno">  519</span>&#160;<span class="comment">    If needed, outer_profile will be converted to a 2d</span></div>
<div class="line"><a name="l00520"></a><span class="lineno">  520</span>&#160;<span class="comment">    curve. If outer_curve is closed but not correctly oriented,</span></div>
<div class="line"><a name="l00521"></a><span class="lineno">  521</span>&#160;<span class="comment">    it will reversed so it has a counter-clockwise orientation.</span></div>
<div class="line"><a name="l00522"></a><span class="lineno">  522</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00523"></a><span class="lineno">  523</span>&#160;  <span class="keywordtype">bool</span> SetOuterProfile( <a class="code" href="class_o_n___curve.html">ON_Curve</a>* outer_profile, <span class="keywordtype">bool</span> bCap );</div>
<div class="line"><a name="l00524"></a><span class="lineno">  524</span>&#160; </div>
<div class="line"><a name="l00525"></a><span class="lineno">  525</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00526"></a><span class="lineno">  526</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l00527"></a><span class="lineno">  527</span>&#160;<span class="comment">    Add an inner profile.</span></div>
<div class="line"><a name="l00528"></a><span class="lineno">  528</span>&#160;<span class="comment">  Paramters:</span></div>
<div class="line"><a name="l00529"></a><span class="lineno">  529</span>&#160;<span class="comment">    inner_profile - [in]</span></div>
<div class="line"><a name="l00530"></a><span class="lineno">  530</span>&#160;<span class="comment">      closed curve in the xy plane or a 2d curve.</span></div>
<div class="line"><a name="l00531"></a><span class="lineno">  531</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l00532"></a><span class="lineno">  532</span>&#160;<span class="comment">    True if the profile was set. In this case the </span></div>
<div class="line"><a name="l00533"></a><span class="lineno">  533</span>&#160;<span class="comment">    ON_Extrusion class  manages the curve and ~ON_Extrusion will </span></div>
<div class="line"><a name="l00534"></a><span class="lineno">  534</span>&#160;<span class="comment">    delete it. The extrusion must already have an outer profile.</span></div>
<div class="line"><a name="l00535"></a><span class="lineno">  535</span>&#160;<span class="comment">    If the extrusion already has a profile, the set will</span></div>
<div class="line"><a name="l00536"></a><span class="lineno">  536</span>&#160;<span class="comment">    fail.</span></div>
<div class="line"><a name="l00537"></a><span class="lineno">  537</span>&#160;<span class="comment">  Remarks:</span></div>
<div class="line"><a name="l00538"></a><span class="lineno">  538</span>&#160;<span class="comment">    If needed, innter_profile will be converted to a 2d</span></div>
<div class="line"><a name="l00539"></a><span class="lineno">  539</span>&#160;<span class="comment">    curve. If inner_profile is not correctly oriented, it</span></div>
<div class="line"><a name="l00540"></a><span class="lineno">  540</span>&#160;<span class="comment">    will be reversed so it has a clockwise orientation.</span></div>
<div class="line"><a name="l00541"></a><span class="lineno">  541</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00542"></a><span class="lineno">  542</span>&#160;  <span class="keywordtype">bool</span> AddInnerProfile( <a class="code" href="class_o_n___curve.html">ON_Curve</a>* inner_profile );</div>
<div class="line"><a name="l00543"></a><span class="lineno">  543</span>&#160; </div>
<div class="line"><a name="l00544"></a><span class="lineno">  544</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00545"></a><span class="lineno">  545</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l00546"></a><span class="lineno">  546</span>&#160;<span class="comment">    Number of profile curves.</span></div>
<div class="line"><a name="l00547"></a><span class="lineno">  547</span>&#160;<span class="comment">  See Also:</span></div>
<div class="line"><a name="l00548"></a><span class="lineno">  548</span>&#160;<span class="comment">    ON_Extrusion::CapCount()</span></div>
<div class="line"><a name="l00549"></a><span class="lineno">  549</span>&#160;<span class="comment">    ON_Extrusion::ProfileSmoothSegmentCount()</span></div>
<div class="line"><a name="l00550"></a><span class="lineno">  550</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00551"></a><span class="lineno">  551</span>&#160;  <span class="keywordtype">int</span> ProfileCount() <span class="keyword">const</span>;</div>
<div class="line"><a name="l00552"></a><span class="lineno">  552</span>&#160; </div>
<div class="line"><a name="l00553"></a><span class="lineno">  553</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00554"></a><span class="lineno">  554</span>&#160;<span class="comment">  Parameter:</span></div>
<div class="line"><a name="l00555"></a><span class="lineno">  555</span>&#160;<span class="comment">    profile_index - [in]</span></div>
<div class="line"><a name="l00556"></a><span class="lineno">  556</span>&#160;<span class="comment">      0 &lt;= profile_index &lt; ProfileCount().</span></div>
<div class="line"><a name="l00557"></a><span class="lineno">  557</span>&#160;<span class="comment">      The outer profile has index 0.</span></div>
<div class="line"><a name="l00558"></a><span class="lineno">  558</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l00559"></a><span class="lineno">  559</span>&#160;<span class="comment">    Number of smooth segments in the profile curve.</span></div>
<div class="line"><a name="l00560"></a><span class="lineno">  560</span>&#160;<span class="comment">  See Also:</span></div>
<div class="line"><a name="l00561"></a><span class="lineno">  561</span>&#160;<span class="comment">    ON_Extrusion::CapCount()</span></div>
<div class="line"><a name="l00562"></a><span class="lineno">  562</span>&#160;<span class="comment">    ON_Extrusion::GetProfileKinkParameters()</span></div>
<div class="line"><a name="l00563"></a><span class="lineno">  563</span>&#160;<span class="comment">    ON_Extrusion::ProfileCount()</span></div>
<div class="line"><a name="l00564"></a><span class="lineno">  564</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00565"></a><span class="lineno">  565</span>&#160;  <span class="keywordtype">int</span> ProfileSmoothSegmentCount( <span class="keywordtype">int</span> profile_index ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00566"></a><span class="lineno">  566</span>&#160; </div>
<div class="line"><a name="l00567"></a><span class="lineno">  567</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00568"></a><span class="lineno">  568</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l00569"></a><span class="lineno">  569</span>&#160;<span class="comment">    Get the surface parameter for the profile.</span></div>
<div class="line"><a name="l00570"></a><span class="lineno">  570</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l00571"></a><span class="lineno">  571</span>&#160;<span class="comment">    0: The first surface parameter corresponds to the profile direction.</span></div>
<div class="line"><a name="l00572"></a><span class="lineno">  572</span>&#160;<span class="comment">       (m_bTransposed = false)</span></div>
<div class="line"><a name="l00573"></a><span class="lineno">  573</span>&#160;<span class="comment">    1: The second surface parameter corresponds to the profile direction.</span></div>
<div class="line"><a name="l00574"></a><span class="lineno">  574</span>&#160;<span class="comment">       (m_bTransposed = true)</span></div>
<div class="line"><a name="l00575"></a><span class="lineno">  575</span>&#160;<span class="comment">  Remarks:</span></div>
<div class="line"><a name="l00576"></a><span class="lineno">  576</span>&#160;<span class="comment">    The default ON_Extrusion constructor sets </span></div>
<div class="line"><a name="l00577"></a><span class="lineno">  577</span>&#160;<span class="comment">    m_bTransposed = false which corresponds to the 0 = ProfileParameter().</span></div>
<div class="line"><a name="l00578"></a><span class="lineno">  578</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00579"></a><span class="lineno">  579</span>&#160;  <span class="keywordtype">int</span> ProfileParameter() <span class="keyword">const</span>;</div>
<div class="line"><a name="l00580"></a><span class="lineno">  580</span>&#160; </div>
<div class="line"><a name="l00581"></a><span class="lineno">  581</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00582"></a><span class="lineno">  582</span>&#160;<span class="comment">  Paramters:</span></div>
<div class="line"><a name="l00583"></a><span class="lineno">  583</span>&#160;<span class="comment">    profile_index - [in]</span></div>
<div class="line"><a name="l00584"></a><span class="lineno">  584</span>&#160;<span class="comment">      0 &lt;= profile_index &lt; ProfileCount().</span></div>
<div class="line"><a name="l00585"></a><span class="lineno">  585</span>&#160;<span class="comment">      The outer profile has index 0.</span></div>
<div class="line"><a name="l00586"></a><span class="lineno">  586</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l00587"></a><span class="lineno">  587</span>&#160;<span class="comment">    Pointer to the i-th 2d profile.  The ON_Extrusion</span></div>
<div class="line"><a name="l00588"></a><span class="lineno">  588</span>&#160;<span class="comment">    class manages this curve.  Do not delete it</span></div>
<div class="line"><a name="l00589"></a><span class="lineno">  589</span>&#160;<span class="comment">    and do not use the pointer if the ON_Extrusion</span></div>
<div class="line"><a name="l00590"></a><span class="lineno">  590</span>&#160;<span class="comment">    class changes.</span></div>
<div class="line"><a name="l00591"></a><span class="lineno">  591</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00592"></a><span class="lineno">  592</span>&#160;  <span class="keyword">const</span> <a class="code" href="class_o_n___curve.html">ON_Curve</a>* Profile(<span class="keywordtype">int</span> profile_index) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00593"></a><span class="lineno">  593</span>&#160; </div>
<div class="line"><a name="l00594"></a><span class="lineno">  594</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00595"></a><span class="lineno">  595</span>&#160;<span class="comment">  Paramters:</span></div>
<div class="line"><a name="l00596"></a><span class="lineno">  596</span>&#160;<span class="comment">    profile_index - [in]</span></div>
<div class="line"><a name="l00597"></a><span class="lineno">  597</span>&#160;<span class="comment">      0 &lt;= profile_index &lt; ProfileCount().</span></div>
<div class="line"><a name="l00598"></a><span class="lineno">  598</span>&#160;<span class="comment">      The outer profile has index 0.</span></div>
<div class="line"><a name="l00599"></a><span class="lineno">  599</span>&#160;<span class="comment">    s - [in] ( 0.0 &lt;= s &lt;= 1.0 )</span></div>
<div class="line"><a name="l00600"></a><span class="lineno">  600</span>&#160;<span class="comment">      A relative parameter controling which priofile</span></div>
<div class="line"><a name="l00601"></a><span class="lineno">  601</span>&#160;<span class="comment">      is returned. s = 0.0 returns the bottom profile</span></div>
<div class="line"><a name="l00602"></a><span class="lineno">  602</span>&#160;<span class="comment">      and s = 1.0 returns the top profile.</span></div>
<div class="line"><a name="l00603"></a><span class="lineno">  603</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l00604"></a><span class="lineno">  604</span>&#160;<span class="comment">    NULL if the input parameters or the ON_Extrusion class is</span></div>
<div class="line"><a name="l00605"></a><span class="lineno">  605</span>&#160;<span class="comment">    not valid.  Otherwise a pointer to a 3d curve for </span></div>
<div class="line"><a name="l00606"></a><span class="lineno">  606</span>&#160;<span class="comment">    the requested profile. This curve is on the heap and</span></div>
<div class="line"><a name="l00607"></a><span class="lineno">  607</span>&#160;<span class="comment">    the caller is responsible for deleting this curve.</span></div>
<div class="line"><a name="l00608"></a><span class="lineno">  608</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00609"></a><span class="lineno">  609</span>&#160;  <a class="code" href="class_o_n___curve.html">ON_Curve</a>* Profile3d(<span class="keywordtype">int</span> profile_index, <span class="keywordtype">double</span> s ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00610"></a><span class="lineno">  610</span>&#160; </div>
<div class="line"><a name="l00611"></a><span class="lineno">  611</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00612"></a><span class="lineno">  612</span>&#160;<span class="comment">  Paramters:</span></div>
<div class="line"><a name="l00613"></a><span class="lineno">  613</span>&#160;<span class="comment">    ci - [in]</span></div>
<div class="line"><a name="l00614"></a><span class="lineno">  614</span>&#160;<span class="comment">      component index identifying a 3d extrusion profile curve.</span></div>
<div class="line"><a name="l00615"></a><span class="lineno">  615</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l00616"></a><span class="lineno">  616</span>&#160;<span class="comment">    NULL if the component index or the ON_Extrusion class is</span></div>
<div class="line"><a name="l00617"></a><span class="lineno">  617</span>&#160;<span class="comment">    not valid.  Otherwise a pointer to a 3d curve for </span></div>
<div class="line"><a name="l00618"></a><span class="lineno">  618</span>&#160;<span class="comment">    the requested profile. This curve is on the heap and</span></div>
<div class="line"><a name="l00619"></a><span class="lineno">  619</span>&#160;<span class="comment">    the caller is responsible for deleting this curve.</span></div>
<div class="line"><a name="l00620"></a><span class="lineno">  620</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00621"></a><span class="lineno">  621</span>&#160;  <a class="code" href="class_o_n___curve.html">ON_Curve</a>* Profile3d( ON_COMPONENT_INDEX ci ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00622"></a><span class="lineno">  622</span>&#160; </div>
<div class="line"><a name="l00623"></a><span class="lineno">  623</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00624"></a><span class="lineno">  624</span>&#160;<span class="comment">  Paramters:</span></div>
<div class="line"><a name="l00625"></a><span class="lineno">  625</span>&#160;<span class="comment">    ci - [in]</span></div>
<div class="line"><a name="l00626"></a><span class="lineno">  626</span>&#160;<span class="comment">      component index identifying a wall edge curve.</span></div>
<div class="line"><a name="l00627"></a><span class="lineno">  627</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l00628"></a><span class="lineno">  628</span>&#160;<span class="comment">    NULL if the component index or the ON_Extrusion class is</span></div>
<div class="line"><a name="l00629"></a><span class="lineno">  629</span>&#160;<span class="comment">    not valid.  Otherwise a pointer to a 3d curve for </span></div>
<div class="line"><a name="l00630"></a><span class="lineno">  630</span>&#160;<span class="comment">    the requested wall edge. This curve is on the heap and</span></div>
<div class="line"><a name="l00631"></a><span class="lineno">  631</span>&#160;<span class="comment">    the caller is responsible for deleting this curve.</span></div>
<div class="line"><a name="l00632"></a><span class="lineno">  632</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00633"></a><span class="lineno">  633</span>&#160;  <a class="code" href="class_o_n___curve.html">ON_Curve</a>* WallEdge( ON_COMPONENT_INDEX ci ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00634"></a><span class="lineno">  634</span>&#160; </div>
<div class="line"><a name="l00635"></a><span class="lineno">  635</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00636"></a><span class="lineno">  636</span>&#160;<span class="comment">  Paramters:</span></div>
<div class="line"><a name="l00637"></a><span class="lineno">  637</span>&#160;<span class="comment">    ci - [in]</span></div>
<div class="line"><a name="l00638"></a><span class="lineno">  638</span>&#160;<span class="comment">      component index identifying a wall surface.</span></div>
<div class="line"><a name="l00639"></a><span class="lineno">  639</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l00640"></a><span class="lineno">  640</span>&#160;<span class="comment">    NULL if the component index or the ON_Extrusion class is</span></div>
<div class="line"><a name="l00641"></a><span class="lineno">  641</span>&#160;<span class="comment">    not valid.  Otherwise a pointer to a surface for </span></div>
<div class="line"><a name="l00642"></a><span class="lineno">  642</span>&#160;<span class="comment">    the requested wall surface. This curve is on the heap and</span></div>
<div class="line"><a name="l00643"></a><span class="lineno">  643</span>&#160;<span class="comment">    the caller is responsible for deleting this curve.</span></div>
<div class="line"><a name="l00644"></a><span class="lineno">  644</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00645"></a><span class="lineno">  645</span>&#160;  <a class="code" href="class_o_n___surface.html">ON_Surface</a>* WallSurface( ON_COMPONENT_INDEX ci ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00646"></a><span class="lineno">  646</span>&#160; </div>
<div class="line"><a name="l00647"></a><span class="lineno">  647</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00648"></a><span class="lineno">  648</span>&#160;<span class="comment">  Paramters:</span></div>
<div class="line"><a name="l00649"></a><span class="lineno">  649</span>&#160;<span class="comment">    line_curve - [in]</span></div>
<div class="line"><a name="l00650"></a><span class="lineno">  650</span>&#160;<span class="comment">      If null, a line curve will be allocated using new.</span></div>
<div class="line"><a name="l00651"></a><span class="lineno">  651</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l00652"></a><span class="lineno">  652</span>&#160;<span class="comment">    Null if the extrusion path is not valid.  Otherwise</span></div>
<div class="line"><a name="l00653"></a><span class="lineno">  653</span>&#160;<span class="comment">    a pointer to an ON_LineCurve that is set to the </span></div>
<div class="line"><a name="l00654"></a><span class="lineno">  654</span>&#160;<span class="comment">    extrusion&#39;s path. The caller must delete this curve.</span></div>
<div class="line"><a name="l00655"></a><span class="lineno">  655</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00656"></a><span class="lineno">  656</span>&#160;  <a class="code" href="class_o_n___line_curve.html">ON_LineCurve</a>* PathLineCurve(<a class="code" href="class_o_n___line_curve.html">ON_LineCurve</a>* line_curve) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00657"></a><span class="lineno">  657</span>&#160; </div>
<div class="line"><a name="l00658"></a><span class="lineno">  658</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00659"></a><span class="lineno">  659</span>&#160;<span class="comment">  Paramters:</span></div>
<div class="line"><a name="l00660"></a><span class="lineno">  660</span>&#160;<span class="comment">    profile_parameter - [in]</span></div>
<div class="line"><a name="l00661"></a><span class="lineno">  661</span>&#160;<span class="comment">      parameter on profile curve</span></div>
<div class="line"><a name="l00662"></a><span class="lineno">  662</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l00663"></a><span class="lineno">  663</span>&#160;<span class="comment">      -1: if the profile_parameter does not correspond </span></div>
<div class="line"><a name="l00664"></a><span class="lineno">  664</span>&#160;<span class="comment">          to a point on the profile curve.</span></div>
<div class="line"><a name="l00665"></a><span class="lineno">  665</span>&#160;<span class="comment">    &gt;= 0: index of the profile curve with domain containing</span></div>
<div class="line"><a name="l00666"></a><span class="lineno">  666</span>&#160;<span class="comment">          this paramter.  When the profile_parameter corresponds</span></div>
<div class="line"><a name="l00667"></a><span class="lineno">  667</span>&#160;<span class="comment">          to the end of one profile and the beginning of the next</span></div>
<div class="line"><a name="l00668"></a><span class="lineno">  668</span>&#160;<span class="comment">          profile, the index of the next profile is returned.</span></div>
<div class="line"><a name="l00669"></a><span class="lineno">  669</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00670"></a><span class="lineno">  670</span>&#160;  <span class="keywordtype">int</span> ProfileIndex( <span class="keywordtype">double</span> profile_parameter ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00671"></a><span class="lineno">  671</span>&#160; </div>
<div class="line"><a name="l00672"></a><span class="lineno">  672</span>&#160; </div>
<div class="line"><a name="l00673"></a><span class="lineno">  673</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00674"></a><span class="lineno">  674</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l00675"></a><span class="lineno">  675</span>&#160;<span class="comment">    If m_profile_count &gt;= 2 and m_profile is an ON_PolyCurve</span></div>
<div class="line"><a name="l00676"></a><span class="lineno">  676</span>&#160;<span class="comment">    with m_profile_count segments defining outer and inner</span></div>
<div class="line"><a name="l00677"></a><span class="lineno">  677</span>&#160;<span class="comment">    profiles, a pointer to the polycurve is returned.</span></div>
<div class="line"><a name="l00678"></a><span class="lineno">  678</span>&#160;<span class="comment">    Otherwise null is returned.</span></div>
<div class="line"><a name="l00679"></a><span class="lineno">  679</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00680"></a><span class="lineno">  680</span>&#160;  <span class="keyword">const</span> <a class="code" href="class_o_n___poly_curve.html">ON_PolyCurve</a>* PolyProfile() <span class="keyword">const</span>;</div>
<div class="line"><a name="l00681"></a><span class="lineno">  681</span>&#160; </div>
<div class="line"><a name="l00682"></a><span class="lineno">  682</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00683"></a><span class="lineno">  683</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l00684"></a><span class="lineno">  684</span>&#160;<span class="comment">    Get a list of the 2d profile curves.</span></div>
<div class="line"><a name="l00685"></a><span class="lineno">  685</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l00686"></a><span class="lineno">  686</span>&#160;<span class="comment">    Number of curves appended to the list.</span></div>
<div class="line"><a name="l00687"></a><span class="lineno">  687</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00688"></a><span class="lineno">  688</span>&#160;  <span class="keywordtype">int</span> GetProfileCurves( <a class="code" href="class_o_n___simple_array.html">ON_SimpleArray&lt;const ON_Curve*&gt;</a>&amp; profile_curves ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00689"></a><span class="lineno">  689</span>&#160; </div>
<div class="line"><a name="l00690"></a><span class="lineno">  690</span>&#160; </div>
<div class="line"><a name="l00691"></a><span class="lineno">  691</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00692"></a><span class="lineno">  692</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l00693"></a><span class="lineno">  693</span>&#160;<span class="comment">    Get the parameters where a profile curve has kinks.</span></div>
<div class="line"><a name="l00694"></a><span class="lineno">  694</span>&#160;<span class="comment">  Parameters:</span></div>
<div class="line"><a name="l00695"></a><span class="lineno">  695</span>&#160;<span class="comment">    profile_index - [in]</span></div>
<div class="line"><a name="l00696"></a><span class="lineno">  696</span>&#160;<span class="comment">    profile_kink_parameters - [out]</span></div>
<div class="line"><a name="l00697"></a><span class="lineno">  697</span>&#160;<span class="comment">      parameters at internal kinks are appended to this array.</span></div>
<div class="line"><a name="l00698"></a><span class="lineno">  698</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l00699"></a><span class="lineno">  699</span>&#160;<span class="comment">    Number of parameters appended to profile_kink_parameters[]</span></div>
<div class="line"><a name="l00700"></a><span class="lineno">  700</span>&#160;<span class="comment">  Remarks:</span></div>
<div class="line"><a name="l00701"></a><span class="lineno">  701</span>&#160;<span class="comment">    This function is used when making the brep form that has</span></div>
<div class="line"><a name="l00702"></a><span class="lineno">  702</span>&#160;<span class="comment">    smooth faces.</span></div>
<div class="line"><a name="l00703"></a><span class="lineno">  703</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00704"></a><span class="lineno">  704</span>&#160;  <span class="keywordtype">int</span> GetProfileKinkParameters( <span class="keywordtype">int</span> profile_index, <a class="code" href="class_o_n___simple_array.html">ON_SimpleArray&lt;double&gt;</a>&amp; profile_kink_parameters ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00705"></a><span class="lineno">  705</span>&#160; </div>
<div class="line"><a name="l00706"></a><span class="lineno">  706</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00707"></a><span class="lineno">  707</span>&#160;<span class="comment">  Parameters:</span></div>
<div class="line"><a name="l00708"></a><span class="lineno">  708</span>&#160;<span class="comment">    profile_index - [in]</span></div>
<div class="line"><a name="l00709"></a><span class="lineno">  709</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l00710"></a><span class="lineno">  710</span>&#160;<span class="comment">    True if the profile has at least one kink.</span></div>
<div class="line"><a name="l00711"></a><span class="lineno">  711</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00712"></a><span class="lineno">  712</span>&#160;  <span class="keywordtype">bool</span> ProfileIsKinked( <span class="keywordtype">int</span> profile_index ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00713"></a><span class="lineno">  713</span>&#160; </div>
<div class="line"><a name="l00714"></a><span class="lineno">  714</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00715"></a><span class="lineno">  715</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l00716"></a><span class="lineno">  716</span>&#160;<span class="comment">    Test a polycurve to determine if it meets the necessary </span></div>
<div class="line"><a name="l00717"></a><span class="lineno">  717</span>&#160;<span class="comment">    conditions to be used as a multi-segment profile in a extrusion.</span></div>
<div class="line"><a name="l00718"></a><span class="lineno">  718</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l00719"></a><span class="lineno">  719</span>&#160;<span class="comment">    True if the returned polycurve can be used a a multi-segment </span></div>
<div class="line"><a name="l00720"></a><span class="lineno">  720</span>&#160;<span class="comment">    profile in a extrusion.</span></div>
<div class="line"><a name="l00721"></a><span class="lineno">  721</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00722"></a><span class="lineno">  722</span>&#160;  <span class="keyword">static</span> <span class="keywordtype">bool</span> IsValidPolyCurveProfile( <span class="keyword">const</span> <a class="code" href="class_o_n___poly_curve.html">ON_PolyCurve</a>&amp; polycurve, <a class="code" href="class_o_n___text_log.html">ON_TextLog</a>* text_log = 0 );</div>
<div class="line"><a name="l00723"></a><span class="lineno">  723</span>&#160; </div>
<div class="line"><a name="l00724"></a><span class="lineno">  724</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00725"></a><span class="lineno">  725</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l00726"></a><span class="lineno">  726</span>&#160;<span class="comment">    If possible, modify a polycurve so it meets the necessary conditions</span></div>
<div class="line"><a name="l00727"></a><span class="lineno">  727</span>&#160;<span class="comment">    to be used as a multi-segment profile in a extrusion.</span></div>
<div class="line"><a name="l00728"></a><span class="lineno">  728</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l00729"></a><span class="lineno">  729</span>&#160;<span class="comment">    True if the returned polycurve can be used a a multi-segment </span></div>
<div class="line"><a name="l00730"></a><span class="lineno">  730</span>&#160;<span class="comment">    profile in a extrusion.</span></div>
<div class="line"><a name="l00731"></a><span class="lineno">  731</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00732"></a><span class="lineno">  732</span>&#160;  <span class="keyword">static</span> <span class="keywordtype">bool</span> CleanupPolyCurveProfile( <a class="code" href="class_o_n___poly_curve.html">ON_PolyCurve</a>&amp; polycurve );</div>
<div class="line"><a name="l00733"></a><span class="lineno">  733</span>&#160; </div>
<div class="line"><a name="l00734"></a><span class="lineno">  734</span>&#160;  <span class="comment">// path definition:</span></div>
<div class="line"><a name="l00735"></a><span class="lineno">  735</span>&#160;  <span class="comment">//   The line m_path must have length &gt; m_path_length_min.</span></div>
<div class="line"><a name="l00736"></a><span class="lineno">  736</span>&#160;  <span class="comment">//   The interval m_t must statisfy 0 &lt;= m_t[0] &lt; m_t[1] &lt;= 1.</span></div>
<div class="line"><a name="l00737"></a><span class="lineno">  737</span>&#160;  <span class="comment">//   The extrusion starts at m_path.PointAt(m_t[0]) and ends</span></div>
<div class="line"><a name="l00738"></a><span class="lineno">  738</span>&#160;  <span class="comment">//   at m_path.PointAt(m_t[1]).</span></div>
<div class="line"><a name="l00739"></a><span class="lineno">  739</span>&#160;  <span class="comment">//   The &quot;up&quot; direction m_up is a unit vector that must</span></div>
<div class="line"><a name="l00740"></a><span class="lineno">  740</span>&#160;  <span class="comment">//   be perpendicular to m_path.Tangent().</span></div>
<div class="line"><a name="l00741"></a><span class="lineno">  741</span>&#160;  <a class="code" href="class_o_n___line.html">ON_Line</a> m_path;</div>
<div class="line"><a name="l00742"></a><span class="lineno">  742</span>&#160;  <a class="code" href="class_o_n___interval.html">ON_Interval</a> m_t;</div>
<div class="line"><a name="l00743"></a><span class="lineno">  743</span>&#160;  <a class="code" href="class_o_n__3d_vector.html">ON_3dVector</a> m_up;</div>
<div class="line"><a name="l00744"></a><span class="lineno">  744</span>&#160; </div>
<div class="line"><a name="l00745"></a><span class="lineno">  745</span>&#160;  <span class="comment">// profile information:</span></div>
<div class="line"><a name="l00746"></a><span class="lineno">  746</span>&#160;  <span class="comment">//   In general, use SetOuterProfile() and AddInnerProfile()</span></div>
<div class="line"><a name="l00747"></a><span class="lineno">  747</span>&#160;  <span class="comment">//   to set m_profile_count and m_profile.  If you are</span></div>
<div class="line"><a name="l00748"></a><span class="lineno">  748</span>&#160;  <span class="comment">//   a glutton for punishment, then you might be interested</span></div>
<div class="line"><a name="l00749"></a><span class="lineno">  749</span>&#160;  <span class="comment">//   in the following.</span></div>
<div class="line"><a name="l00750"></a><span class="lineno">  750</span>&#160;  <span class="comment">//   The profile curves must be in the x-y plane.</span></div>
<div class="line"><a name="l00751"></a><span class="lineno">  751</span>&#160;  <span class="comment">//   The profile&#39;s &quot;y&quot; axis corresponds to m_up.</span></div>
<div class="line"><a name="l00752"></a><span class="lineno">  752</span>&#160;  <span class="comment">//   The point (0,0) is extruded along the m_path line.</span></div>
<div class="line"><a name="l00753"></a><span class="lineno">  753</span>&#160;  <span class="comment">//   If m_profile_count = 1, then m_profile can be any</span></div>
<div class="line"><a name="l00754"></a><span class="lineno">  754</span>&#160;  <span class="comment">//   type of continous curve.  If m_profile_count &gt; 1,</span></div>
<div class="line"><a name="l00755"></a><span class="lineno">  755</span>&#160;  <span class="comment">//   then m_profile must be an ON_PolyCurve with</span></div>
<div class="line"><a name="l00756"></a><span class="lineno">  756</span>&#160;  <span class="comment">//   m_profile_count segments, the domain of each segment</span></div>
<div class="line"><a name="l00757"></a><span class="lineno">  757</span>&#160;  <span class="comment">//   must exactly match the polycurve&#39;s segment domain,</span></div>
<div class="line"><a name="l00758"></a><span class="lineno">  758</span>&#160;  <span class="comment">//   every segment must be continuous and closed,</span></div>
<div class="line"><a name="l00759"></a><span class="lineno">  759</span>&#160;  <span class="comment">//   the first segement curve must have counter-clockwise</span></div>
<div class="line"><a name="l00760"></a><span class="lineno">  760</span>&#160;  <span class="comment">//   orientation, and the rest must have clockwise </span></div>
<div class="line"><a name="l00761"></a><span class="lineno">  761</span>&#160;  <span class="comment">//   orientations.</span></div>
<div class="line"><a name="l00762"></a><span class="lineno">  762</span>&#160;  <span class="keywordtype">int</span> m_profile_count;</div>
<div class="line"><a name="l00763"></a><span class="lineno">  763</span>&#160;  <a class="code" href="class_o_n___curve.html">ON_Curve</a>* m_profile;</div>
<div class="line"><a name="l00764"></a><span class="lineno">  764</span>&#160; </div>
<div class="line"><a name="l00765"></a><span class="lineno">  765</span>&#160;  <span class="comment">// capped end information:</span></div>
<div class="line"><a name="l00766"></a><span class="lineno">  766</span>&#160;  <span class="comment">//   If the profile is closed, then m_bCap[] determines</span></div>
<div class="line"><a name="l00767"></a><span class="lineno">  767</span>&#160;  <span class="comment">//   if the ends are capped.</span></div>
<div class="line"><a name="l00768"></a><span class="lineno">  768</span>&#160;  <span class="keywordtype">bool</span> m_bCap[2];</div>
<div class="line"><a name="l00769"></a><span class="lineno">  769</span>&#160; </div>
<div class="line"><a name="l00770"></a><span class="lineno">  770</span>&#160;  <span class="comment">// mitered end information:</span></div>
<div class="line"><a name="l00771"></a><span class="lineno">  771</span>&#160;  <span class="comment">//   The normals m_N[] are with respect to the xy plane.</span></div>
<div class="line"><a name="l00772"></a><span class="lineno">  772</span>&#160;  <span class="comment">//   A normal parallel to the z axis has no mitering.</span></div>
<div class="line"><a name="l00773"></a><span class="lineno">  773</span>&#160;  <span class="comment">//   If m_bHaveN[i] is true, then m_N[i] must be a 3d unit</span></div>
<div class="line"><a name="l00774"></a><span class="lineno">  774</span>&#160;  <span class="comment">//   vector with m_N[i].z &gt; m_Nz_tol;  If m_bHaveN[i]</span></div>
<div class="line"><a name="l00775"></a><span class="lineno">  775</span>&#160;  <span class="comment">//   is false, then m_N[i] is ignored.  The normal m_N[0]</span></div>
<div class="line"><a name="l00776"></a><span class="lineno">  776</span>&#160;  <span class="comment">//   defines the start miter plane and m_N[1] defines the</span></div>
<div class="line"><a name="l00777"></a><span class="lineno">  777</span>&#160;  <span class="comment">//   end miter plane.</span></div>
<div class="line"><a name="l00778"></a><span class="lineno">  778</span>&#160;  <span class="keywordtype">bool</span> m_bHaveN[2];</div>
<div class="line"><a name="l00779"></a><span class="lineno">  779</span>&#160;  <a class="code" href="class_o_n__3d_vector.html">ON_3dVector</a> m_N[2];</div>
<div class="line"><a name="l00780"></a><span class="lineno">  780</span>&#160; </div>
<div class="line"><a name="l00781"></a><span class="lineno">  781</span>&#160;  <span class="comment">// Surface parameterization information</span></div>
<div class="line"><a name="l00782"></a><span class="lineno">  782</span>&#160;  <a class="code" href="class_o_n___interval.html">ON_Interval</a> m_path_domain;</div>
<div class="line"><a name="l00783"></a><span class="lineno">  783</span>&#160;  <span class="keywordtype">bool</span> m_bTransposed; <span class="comment">// false: (s,t) = (profile,path)</span></div>
<div class="line"><a name="l00784"></a><span class="lineno">  784</span>&#160; </div>
<div class="line"><a name="l00785"></a><span class="lineno">  785</span>&#160;  <span class="comment">// The z coordinates of miter plane normals must be</span></div>
<div class="line"><a name="l00786"></a><span class="lineno">  786</span>&#160;  <span class="comment">// greater than m_Nz_tol</span></div>
<div class="line"><a name="l00787"></a><span class="lineno">  787</span>&#160;  <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">double</span> m_Nz_min; <span class="comment">// 1/64;</span></div>
<div class="line"><a name="l00788"></a><span class="lineno">  788</span>&#160; </div>
<div class="line"><a name="l00789"></a><span class="lineno">  789</span>&#160;  <span class="comment">// The length of the m_path line must be greater than</span></div>
<div class="line"><a name="l00790"></a><span class="lineno">  790</span>&#160;  <span class="comment">// m_path_length_min</span></div>
<div class="line"><a name="l00791"></a><span class="lineno">  791</span>&#160;  <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">double</span> m_path_length_min; <span class="comment">// ON_ZERO_TOLERANCE;</span></div>
<div class="line"><a name="l00792"></a><span class="lineno">  792</span>&#160; </div>
<div class="line"><a name="l00793"></a><span class="lineno">  793</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00794"></a><span class="lineno">  794</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l00795"></a><span class="lineno">  795</span>&#160;<span class="comment">    Get an ON_Exrusion form of a cylinder.</span></div>
<div class="line"><a name="l00796"></a><span class="lineno">  796</span>&#160;<span class="comment">  Parameters:</span></div>
<div class="line"><a name="l00797"></a><span class="lineno">  797</span>&#160;<span class="comment">    cylinder - [in] cylinder.IsFinite() must be true</span></div>
<div class="line"><a name="l00798"></a><span class="lineno">  798</span>&#160;<span class="comment">    bCapBottom - [in] if true, the end at cylinder.m_height[0] will be capped</span></div>
<div class="line"><a name="l00799"></a><span class="lineno">  799</span>&#160;<span class="comment">    bCapTop - [in] if true, the end at cylinder.m_height[1] will be capped</span></div>
<div class="line"><a name="l00800"></a><span class="lineno">  800</span>&#160;<span class="comment">    extrusion - [in] </span></div>
<div class="line"><a name="l00801"></a><span class="lineno">  801</span>&#160;<span class="comment">      If the input extrusion pointer is null, one will be allocated on the heap</span></div>
<div class="line"><a name="l00802"></a><span class="lineno">  802</span>&#160;<span class="comment">      and it is the caller&#39;s responsibility to delte it at an appropriate time.</span></div>
<div class="line"><a name="l00803"></a><span class="lineno">  803</span>&#160;<span class="comment">      If the input pointer is not null, this extrusion will be used and the same</span></div>
<div class="line"><a name="l00804"></a><span class="lineno">  804</span>&#160;<span class="comment">      pointer will be returned, provided the input is valid.</span></div>
<div class="line"><a name="l00805"></a><span class="lineno">  805</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l00806"></a><span class="lineno">  806</span>&#160;<span class="comment">    If the input is valid, a pointer to an ON_Exrusion form of the cylinder.</span></div>
<div class="line"><a name="l00807"></a><span class="lineno">  807</span>&#160;<span class="comment">    If the input is not valid, then null, even when the input extrusion</span></div>
<div class="line"><a name="l00808"></a><span class="lineno">  808</span>&#160;<span class="comment">    object is not null.</span></div>
<div class="line"><a name="l00809"></a><span class="lineno">  809</span>&#160;<span class="comment">  Example:</span></div>
<div class="line"><a name="l00810"></a><span class="lineno">  810</span>&#160;<span class="comment"></span> </div>
<div class="line"><a name="l00811"></a><span class="lineno">  811</span>&#160;<span class="comment">          ON_Cylinder cylinder = ...;</span></div>
<div class="line"><a name="l00812"></a><span class="lineno">  812</span>&#160;<span class="comment">          bool bCapBottom = true;</span></div>
<div class="line"><a name="l00813"></a><span class="lineno">  813</span>&#160;<span class="comment">          bool bCapTop = true;</span></div>
<div class="line"><a name="l00814"></a><span class="lineno">  814</span>&#160;<span class="comment">          ON_Extrusion extrusion;</span></div>
<div class="line"><a name="l00815"></a><span class="lineno">  815</span>&#160;<span class="comment">          if ( 0 == ON_Extrusion::Cylinder(cylinder,bCapBottom,bCapTop,&amp;extrusion) )</span></div>
<div class="line"><a name="l00816"></a><span class="lineno">  816</span>&#160;<span class="comment">          {</span></div>
<div class="line"><a name="l00817"></a><span class="lineno">  817</span>&#160;<span class="comment">            // input is not valid - nothing set</span></div>
<div class="line"><a name="l00818"></a><span class="lineno">  818</span>&#160;<span class="comment">            ...</span></div>
<div class="line"><a name="l00819"></a><span class="lineno">  819</span>&#160;<span class="comment">          }</span></div>
<div class="line"><a name="l00820"></a><span class="lineno">  820</span>&#160;<span class="comment">          else</span></div>
<div class="line"><a name="l00821"></a><span class="lineno">  821</span>&#160;<span class="comment">          {</span></div>
<div class="line"><a name="l00822"></a><span class="lineno">  822</span>&#160;<span class="comment">            // extrusion = cylinder</span></div>
<div class="line"><a name="l00823"></a><span class="lineno">  823</span>&#160;<span class="comment">            ...</span></div>
<div class="line"><a name="l00824"></a><span class="lineno">  824</span>&#160;<span class="comment">          }</span></div>
<div class="line"><a name="l00825"></a><span class="lineno">  825</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00826"></a><span class="lineno">  826</span>&#160;  <span class="keyword">static</span> <a class="code" href="class_o_n___extrusion.html">ON_Extrusion</a>* Cylinder( </div>
<div class="line"><a name="l00827"></a><span class="lineno">  827</span>&#160;    <span class="keyword">const</span> <a class="code" href="class_o_n___cylinder.html">ON_Cylinder</a>&amp; cylinder, </div>
<div class="line"><a name="l00828"></a><span class="lineno">  828</span>&#160;    <span class="keywordtype">bool</span> bCapBottom,</div>
<div class="line"><a name="l00829"></a><span class="lineno">  829</span>&#160;    <span class="keywordtype">bool</span> bCapTop,</div>
<div class="line"><a name="l00830"></a><span class="lineno">  830</span>&#160;    <a class="code" href="class_o_n___extrusion.html">ON_Extrusion</a>* extrusion = 0 </div>
<div class="line"><a name="l00831"></a><span class="lineno">  831</span>&#160;    );</div>
<div class="line"><a name="l00832"></a><span class="lineno">  832</span>&#160; </div>
<div class="line"><a name="l00833"></a><span class="lineno">  833</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00834"></a><span class="lineno">  834</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l00835"></a><span class="lineno">  835</span>&#160;<span class="comment">    Get an ON_Exrusion form of a pipe.</span></div>
<div class="line"><a name="l00836"></a><span class="lineno">  836</span>&#160;<span class="comment">  Parameters:</span></div>
<div class="line"><a name="l00837"></a><span class="lineno">  837</span>&#160;<span class="comment">    cylinder - [in] cylinder.IsFinite() must be true</span></div>
<div class="line"><a name="l00838"></a><span class="lineno">  838</span>&#160;<span class="comment">      The cylinder can be either the inner or outer wall of the pipe.</span></div>
<div class="line"><a name="l00839"></a><span class="lineno">  839</span>&#160;<span class="comment">    other_radius - [in] ( != cylinder.Radius() )</span></div>
<div class="line"><a name="l00840"></a><span class="lineno">  840</span>&#160;<span class="comment">      If cylinder.Radius() &lt; other_radius, then the cylinder will be</span></div>
<div class="line"><a name="l00841"></a><span class="lineno">  841</span>&#160;<span class="comment">      the inside of the pipe.  If cylinder.Radius() &gt; other_radius, then</span></div>
<div class="line"><a name="l00842"></a><span class="lineno">  842</span>&#160;<span class="comment">      the cylinder will be the outside of the pipe.</span></div>
<div class="line"><a name="l00843"></a><span class="lineno">  843</span>&#160;<span class="comment">    bCapBottom - [in] if true, the end at cylinder.m_height[0] will be capped</span></div>
<div class="line"><a name="l00844"></a><span class="lineno">  844</span>&#160;<span class="comment">    bCapTop - [in] if true, the end at cylinder.m_height[1] will be capped</span></div>
<div class="line"><a name="l00845"></a><span class="lineno">  845</span>&#160;<span class="comment">    extrusion - [in] </span></div>
<div class="line"><a name="l00846"></a><span class="lineno">  846</span>&#160;<span class="comment">      If the input extrusion pointer is null, one will be allocated on the heap</span></div>
<div class="line"><a name="l00847"></a><span class="lineno">  847</span>&#160;<span class="comment">      and it is the caller&#39;s responsibility to delte it at an appropriate time.</span></div>
<div class="line"><a name="l00848"></a><span class="lineno">  848</span>&#160;<span class="comment">      If the input pointer is not null, this extrusion will be used and the same</span></div>
<div class="line"><a name="l00849"></a><span class="lineno">  849</span>&#160;<span class="comment">      pointer will be returned, provided the input is valid.</span></div>
<div class="line"><a name="l00850"></a><span class="lineno">  850</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l00851"></a><span class="lineno">  851</span>&#160;<span class="comment">    If the input is valid, a pointer to an ON_Exrusion form of the pipe.</span></div>
<div class="line"><a name="l00852"></a><span class="lineno">  852</span>&#160;<span class="comment">    If the input is not valid, then null, even when the input extrusion</span></div>
<div class="line"><a name="l00853"></a><span class="lineno">  853</span>&#160;<span class="comment">    object is not null.</span></div>
<div class="line"><a name="l00854"></a><span class="lineno">  854</span>&#160;<span class="comment">  Example:</span></div>
<div class="line"><a name="l00855"></a><span class="lineno">  855</span>&#160;<span class="comment"></span> </div>
<div class="line"><a name="l00856"></a><span class="lineno">  856</span>&#160;<span class="comment">          ON_Cylinder cylinder = ...;</span></div>
<div class="line"><a name="l00857"></a><span class="lineno">  857</span>&#160;<span class="comment">          double other_radius = cylinder.Radius()+1.0;</span></div>
<div class="line"><a name="l00858"></a><span class="lineno">  858</span>&#160;<span class="comment">          bool bCapBottom = true;</span></div>
<div class="line"><a name="l00859"></a><span class="lineno">  859</span>&#160;<span class="comment">          bool bCapTop = true;</span></div>
<div class="line"><a name="l00860"></a><span class="lineno">  860</span>&#160;<span class="comment">          ON_Extrusion extrusion;</span></div>
<div class="line"><a name="l00861"></a><span class="lineno">  861</span>&#160;<span class="comment">          if ( 0 == ON_Extrusion::Pipe(cylinder,other_radius,bCapBottom,bCapTop,&amp;extrusion) )</span></div>
<div class="line"><a name="l00862"></a><span class="lineno">  862</span>&#160;<span class="comment">          {</span></div>
<div class="line"><a name="l00863"></a><span class="lineno">  863</span>&#160;<span class="comment">            // input is not valid - nothing set</span></div>
<div class="line"><a name="l00864"></a><span class="lineno">  864</span>&#160;<span class="comment">            ...</span></div>
<div class="line"><a name="l00865"></a><span class="lineno">  865</span>&#160;<span class="comment">          }</span></div>
<div class="line"><a name="l00866"></a><span class="lineno">  866</span>&#160;<span class="comment">          else</span></div>
<div class="line"><a name="l00867"></a><span class="lineno">  867</span>&#160;<span class="comment">          {</span></div>
<div class="line"><a name="l00868"></a><span class="lineno">  868</span>&#160;<span class="comment">            // extrusion = pipe</span></div>
<div class="line"><a name="l00869"></a><span class="lineno">  869</span>&#160;<span class="comment">            ...</span></div>
<div class="line"><a name="l00870"></a><span class="lineno">  870</span>&#160;<span class="comment">          }</span></div>
<div class="line"><a name="l00871"></a><span class="lineno">  871</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00872"></a><span class="lineno">  872</span>&#160;  <span class="keyword">static</span> <a class="code" href="class_o_n___extrusion.html">ON_Extrusion</a>* Pipe( </div>
<div class="line"><a name="l00873"></a><span class="lineno">  873</span>&#160;    <span class="keyword">const</span> <a class="code" href="class_o_n___cylinder.html">ON_Cylinder</a>&amp; cylinder, </div>
<div class="line"><a name="l00874"></a><span class="lineno">  874</span>&#160;    <span class="keywordtype">double</span> other_radius,</div>
<div class="line"><a name="l00875"></a><span class="lineno">  875</span>&#160;    <span class="keywordtype">bool</span> bCapBottom,</div>
<div class="line"><a name="l00876"></a><span class="lineno">  876</span>&#160;    <span class="keywordtype">bool</span> bCapTop,</div>
<div class="line"><a name="l00877"></a><span class="lineno">  877</span>&#160;    <a class="code" href="class_o_n___extrusion.html">ON_Extrusion</a>* extrusion = 0 </div>
<div class="line"><a name="l00878"></a><span class="lineno">  878</span>&#160;    );</div>
<div class="line"><a name="l00879"></a><span class="lineno">  879</span>&#160; </div>
<div class="line"><a name="l00880"></a><span class="lineno">  880</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00881"></a><span class="lineno">  881</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l00882"></a><span class="lineno">  882</span>&#160;<span class="comment">    Create an ON_Exrusion from a 3d curve, a plane and a height.</span></div>
<div class="line"><a name="l00883"></a><span class="lineno">  883</span>&#160;<span class="comment">  Parameters:</span></div>
<div class="line"><a name="l00884"></a><span class="lineno">  884</span>&#160;<span class="comment">    curve - [in] </span></div>
<div class="line"><a name="l00885"></a><span class="lineno">  885</span>&#160;<span class="comment">      A continuous 3d curve.</span></div>
<div class="line"><a name="l00886"></a><span class="lineno">  886</span>&#160;<span class="comment">    plane - [in]</span></div>
<div class="line"><a name="l00887"></a><span class="lineno">  887</span>&#160;<span class="comment">      If plane is null, then the plane returned by curve.IsPlanar() is used.</span></div>
<div class="line"><a name="l00888"></a><span class="lineno">  888</span>&#160;<span class="comment">      The 3d curve is projected to this plane and the result is passed to</span></div>
<div class="line"><a name="l00889"></a><span class="lineno">  889</span>&#160;<span class="comment">      ON_Extrusion::SetOuterProfile().</span></div>
<div class="line"><a name="l00890"></a><span class="lineno">  890</span>&#160;<span class="comment">    height - [in]</span></div>
<div class="line"><a name="l00891"></a><span class="lineno">  891</span>&#160;<span class="comment">      If the height &gt; 0, the bottom of the extrusion will be in plane and</span></div>
<div class="line"><a name="l00892"></a><span class="lineno">  892</span>&#160;<span class="comment">      the top will be height units above the plane.</span></div>
<div class="line"><a name="l00893"></a><span class="lineno">  893</span>&#160;<span class="comment">      If the height &lt; 0, the top of the extrusion will be in plane and</span></div>
<div class="line"><a name="l00894"></a><span class="lineno">  894</span>&#160;<span class="comment">      the bottom will be height units below the plane.</span></div>
<div class="line"><a name="l00895"></a><span class="lineno">  895</span>&#160;<span class="comment">    bCap - [in]</span></div>
<div class="line"><a name="l00896"></a><span class="lineno">  896</span>&#160;<span class="comment">      If the curve is closed and bCap is true, then the resulting extrusion</span></div>
<div class="line"><a name="l00897"></a><span class="lineno">  897</span>&#160;<span class="comment">      is capped.</span></div>
<div class="line"><a name="l00898"></a><span class="lineno">  898</span>&#160;<span class="comment">    extrusion - [in] </span></div>
<div class="line"><a name="l00899"></a><span class="lineno">  899</span>&#160;<span class="comment">      If the input extrusion pointer is null, one will be allocated on the heap</span></div>
<div class="line"><a name="l00900"></a><span class="lineno">  900</span>&#160;<span class="comment">      and it is the caller&#39;s responsibility to delte it at an appropriate time.</span></div>
<div class="line"><a name="l00901"></a><span class="lineno">  901</span>&#160;<span class="comment">      If the input pointer is not null, this extrusion will be used and the same</span></div>
<div class="line"><a name="l00902"></a><span class="lineno">  902</span>&#160;<span class="comment">      pointer will be returned, provided the input is valid.</span></div>
<div class="line"><a name="l00903"></a><span class="lineno">  903</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l00904"></a><span class="lineno">  904</span>&#160;<span class="comment">    If the input is valid, a pointer to an ON_Exrusion form of the pipe.</span></div>
<div class="line"><a name="l00905"></a><span class="lineno">  905</span>&#160;<span class="comment">    If the input is not valid, then null, even when the input extrusion</span></div>
<div class="line"><a name="l00906"></a><span class="lineno">  906</span>&#160;<span class="comment">    object is not null.</span></div>
<div class="line"><a name="l00907"></a><span class="lineno">  907</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00908"></a><span class="lineno">  908</span>&#160;  <span class="keyword">static</span> <a class="code" href="class_o_n___extrusion.html">ON_Extrusion</a>* CreateFrom3dCurve( </div>
<div class="line"><a name="l00909"></a><span class="lineno">  909</span>&#160;    <span class="keyword">const</span> <a class="code" href="class_o_n___curve.html">ON_Curve</a>&amp; curve,</div>
<div class="line"><a name="l00910"></a><span class="lineno">  910</span>&#160;    <span class="keyword">const</span> <a class="code" href="class_o_n___plane.html">ON_Plane</a>* plane,</div>
<div class="line"><a name="l00911"></a><span class="lineno">  911</span>&#160;    <span class="keywordtype">double</span> height,</div>
<div class="line"><a name="l00912"></a><span class="lineno">  912</span>&#160;    <span class="keywordtype">bool</span> bCap,</div>
<div class="line"><a name="l00913"></a><span class="lineno">  913</span>&#160;    <a class="code" href="class_o_n___extrusion.html">ON_Extrusion</a>* extrusion = 0 </div>
<div class="line"><a name="l00914"></a><span class="lineno">  914</span>&#160;    );</div>
<div class="line"><a name="l00915"></a><span class="lineno">  915</span>&#160; </div>
<div class="line"><a name="l00916"></a><span class="lineno">  916</span>&#160;};</div>
<div class="line"><a name="l00917"></a><span class="lineno">  917</span>&#160; </div>
<div class="line"><a name="l00918"></a><span class="lineno">  918</span>&#160; </div>
<div class="line"><a name="l00919"></a><span class="lineno">  919</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00920"></a><span class="lineno">  920</span>&#160; </div>
<div class="ttc" id="aclass_o_n__3d_point_html"><div class="ttname"><a href="class_o_n__3d_point.html">ON_3dPoint</a></div><div class="ttdef"><b>Definition:</b> opennurbs_point.h:419</div></div>
<div class="ttc" id="aclass_o_n__3d_vector_html"><div class="ttname"><a href="class_o_n__3d_vector.html">ON_3dVector</a></div><div class="ttdef"><b>Definition:</b> opennurbs_point.h:953</div></div>
<div class="ttc" id="aclass_o_n___binary_archive_html"><div class="ttname"><a href="class_o_n___binary_archive.html">ON_BinaryArchive</a></div><div class="ttdef"><b>Definition:</b> opennurbs_archive.h:732</div></div>
<div class="ttc" id="aclass_o_n___bounding_box_html"><div class="ttname"><a href="class_o_n___bounding_box.html">ON_BoundingBox</a></div><div class="ttdef"><b>Definition:</b> opennurbs_bounding_box.h:26</div></div>
<div class="ttc" id="aclass_o_n___brep_html"><div class="ttname"><a href="class_o_n___brep.html">ON_Brep</a></div><div class="ttdef"><b>Definition:</b> opennurbs_brep.h:1571</div></div>
<div class="ttc" id="aclass_o_n___curve_html"><div class="ttname"><a href="class_o_n___curve.html">ON_Curve</a></div><div class="ttdef"><b>Definition:</b> opennurbs_curve.h:89</div></div>
<div class="ttc" id="aclass_o_n___cylinder_html"><div class="ttname"><a href="class_o_n___cylinder.html">ON_Cylinder</a></div><div class="ttdef"><b>Definition:</b> opennurbs_cylinder.h:29</div></div>
<div class="ttc" id="aclass_o_n___extrusion_html"><div class="ttname"><a href="class_o_n___extrusion.html">ON_Extrusion</a></div><div class="ttdef"><b>Definition:</b> opennurbs_beam.h:37</div></div>
<div class="ttc" id="aclass_o_n___interval_html"><div class="ttname"><a href="class_o_n___interval.html">ON_Interval</a></div><div class="ttdef"><b>Definition:</b> opennurbs_point.h:49</div></div>
<div class="ttc" id="aclass_o_n___line_curve_html"><div class="ttname"><a href="class_o_n___line_curve.html">ON_LineCurve</a></div><div class="ttdef"><b>Definition:</b> opennurbs_linecurve.h:22</div></div>
<div class="ttc" id="aclass_o_n___line_html"><div class="ttname"><a href="class_o_n___line.html">ON_Line</a></div><div class="ttdef"><b>Definition:</b> opennurbs_line.h:21</div></div>
<div class="ttc" id="aclass_o_n___nurbs_surface_html"><div class="ttname"><a href="class_o_n___nurbs_surface.html">ON_NurbsSurface</a></div><div class="ttdef"><b>Definition:</b> opennurbs_nurbssurface.h:65</div></div>
<div class="ttc" id="aclass_o_n___plane_html"><div class="ttname"><a href="class_o_n___plane.html">ON_Plane</a></div><div class="ttdef"><b>Definition:</b> opennurbs_plane.h:21</div></div>
<div class="ttc" id="aclass_o_n___poly_curve_html"><div class="ttname"><a href="class_o_n___poly_curve.html">ON_PolyCurve</a></div><div class="ttdef"><b>Definition:</b> opennurbs_polycurve.h:38</div></div>
<div class="ttc" id="aclass_o_n___simple_array_html"><div class="ttname"><a href="class_o_n___simple_array.html">ON_SimpleArray</a></div><div class="ttdef"><b>Definition:</b> opennurbs_array.h:47</div></div>
<div class="ttc" id="aclass_o_n___sum_surface_html"><div class="ttname"><a href="class_o_n___sum_surface.html">ON_SumSurface</a></div><div class="ttdef"><b>Definition:</b> opennurbs_sumsurface.h:24</div></div>
<div class="ttc" id="aclass_o_n___surface_html"><div class="ttname"><a href="class_o_n___surface.html">ON_Surface</a></div><div class="ttdef"><b>Definition:</b> opennurbs_surface.h:45</div></div>
<div class="ttc" id="aclass_o_n___text_log_html"><div class="ttname"><a href="class_o_n___text_log.html">ON_TextLog</a></div><div class="ttdef"><b>Definition:</b> opennurbs_textlog.h:23</div></div>
<div class="ttc" id="aclass_o_n___xform_html"><div class="ttname"><a href="class_o_n___xform.html">ON_Xform</a></div><div class="ttdef"><b>Definition:</b> opennurbs_xform.h:29</div></div>
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